Interview question

Tell me something that’s true, that almost nobody agrees with you on.

Peter A. Thiel – German-born American investor and company founder: PayPal (b. 1967), in a discussion with entrepreneur and LinkedIn’s co-founder Reid Hoffman (2012), Quotations book 2019

Americas true greatness

It was not until I went into the churches of America, and I heard her pulpits aflame with righteousness did I understand the secret of her genious and power.

Attributed to Alexis de Tocqueville – Franch publicist and politician (1805-1859), Quotations book 2007


Don’t think there are no crocodiles because the waters are calm.

Malaysian proverb – Quotations book 2003


Education is what remains, when the last Dollar is spent.

proverb, falsely attributed to Mark Twain – born Samuel Langhorne Clemens, American writer (1835-1910), could not be verified by the Mark Twain library, Quotations book 2014

Savoir et voir

Il faut savoir et voir, et il faut voir et savoir.

Claude Lanzmann – réalisateur et documentaire français (1925-2018), d’après une interview dans “Cahiers du cinéma”, n ° 374, (juillet / août 1985)

Do not fear

Fear is nothing but the failure to use the help that reason gives.

The Bible, Wisdom 17:12 (GNT) – Quotations book 2022


It’s a good idea to review past mistakes before committing new ones.

Warren Buffett – American value investor, Chairman of Berkshire Hathaway (b. 1930), from “Warren Buffett on Business: Principles from the Sage of Omaha” (2009), Quotations book 2020


By wisdom a house is built; by understanding it is established. By knowledge rooms are filled with all precious and pleasant wealth.

The Bible, Proverbs 24:3-4 (CEB) – Quotations book 2014


The greatest trust between man and man is the trust of giving counsel.

Summa quae intercedit inter homines fides, et illa consilium impertiendi.

Sir Francis Bacon – English philosopher, politician and writer (1561-1626), from his essay “De Consilio” (“Of Counsils”) in “Essayes: Religious Meditations. Places of Perswasion and Disswasion. Seene and Allowed” (1625), Quotations book 2018


Our intellect extends to the infinite in understanding.

Intellectus noster ad infinitum in intelligendo extenditur.

Thomas Aquinas – Italian philosopher and theologian (1224/25-1274), from “Summa contra Gentiles” I, cap. 43, n. 10 (circa 1260)


When you talk you are only repeating what you already know,
but when you listen you may learn something.

Wisdom – Quotations book 2017

Do it

Most organizations spend all their time looking for the next new management concept rather than following up on what everyone just learned.

Dr. Ken Blanchard – American management expert and author (b. 1939), Quotations book 2007

Wisdom and diligence

Those who are wise won’t be busy, and those who are too busy can’t be wise.

Lin Yutang – Chinese philosopher (1895-1976), from “The Importance of Living” (1937)

Get smarter

Learning from the success and failure of others is the fastest way to get smarter and wiser without a lot of pain.

Tren Griffin – American author and entrepreneur, Senior Director at Microsoft, from “Charlie Munger: The Complete Investor” (2015)

Myth as the enemy of truth

For the great enemy of truth is very often not the lie – deliberate, contrived and dishonest – but the myth – persistent, persuasive and unrealistic. Too often we hold fast to the cliches of our forebears. We subject all facts to a prefabricated set of interpretations. We enjoy the comfort of opinions without the discomfort of thougt.

John F. Kennedy – American politician, 1961-63 35th president (1917-1963), during a speech at the Yale University on June 11th, 1962, Quotations book 2005

Wisdom and knowledge

A wise man has great power. A man who has knowledge increases his strength.

The Bible, Proverbs 24:5 (NIRV) – Quotations book 2019

Alexander’s question

What data, facts, or events would cause you to change your mind?

Dr. E. Russell Alexander – American epidemiologist and public health official (1928-2006), Quotations book 2022


It’s not that I’m so smart; it’s just that I stay with problems longer.

attributed to Albert Einstein – German physicist, Nobel prize in physics 1921 (1879-1955)


The great thing about fact-based decisions is that they overrule the hierarchy.

Jeffrey P. “Jeff” Bezos – American company founder: Amazon (b. 1964), quoted in “Jeff Bezos: Definitive Guide to PR and Marketing For Founders and Entrepreneurs — Pressfarm” (2018), Quotations book 2021

The lesson of the Samurai

Many are those who will give advice, but few are those who will accept it with gratitude, and even fewer are those who will follow it. After the age of 30, man becomes generally impermeable to guidance. And when guidance no longer reaches him, he rapidly becomes full of pride and self-interest. For the rest of his days, he adds impudence to foolishness, which causes his irreversible fall. This is why it is indispensable to find someone capable of discernment, and to bind yourself to him in order to receive his teachings..

from the Hagakure (spiritual guide for the Samurai, written between 1709 and 1716)


Education is the passport to the future, for tomorrow belongs to those who prepare for it today.

attributed to Malcolm X zugeschrieben – born Malcolm Little; American Muslim preacher and civil rights activist (1925-1965)


During my eighty-seven years I have witnessed a whole succession of technological revolutions. But none of them has done away with the need for character in the individual or the ability to think.

Bernard M. Baruch – American financier, adviser to several American presidents (1870-1965)

Learn from enemies

The wise learn many things from their enemies.

Ἀλλ´ ἀπ´ ἐχθρῶν δῆτα πολλὰ μανθάνουσιν οἱ σοφοί.

Aristophanes – Greek comic playwright (455-385 B.C.), from “The Birds”, l. 375 (“Ὄρνιθες”, 414 B.C.), Quotations book 2022

Wisdom and wealth

Wisdom outweighs any wealth.

Sophocles – Greek poet (496 – 406/405 BC)


We would accomplish many more things if we did not think of them as impossible.

Chrétien-Guillaume de Lamoignon de Malesherbes – French politician and minister (1721-1794), from”Pensées et Maximes” (1802), Quotations book 2013


The most successful person is usually the one with the best information.

Benjamin Disraeli – English writer and politician, 1868 and 1874-80 Prime Minister (1804-1881), Quotations book 2013


Anyone who stops learning is old, whether at twenty or eighty.

Henry Ford – American engineer and industrialist (1863-1947), Quotations book 2006


Most economists use statistics like drunks use lampposts: for support rather than for light.

attributed in a similar Version to Andrew Lang (Scottish writer, anthropologist and journalist, 1844-1912) and falsely to Sir Winston L. Churchill (British politician, 1940-45 and 1951-55 Prime Minister, Nobel Prize in literature 1953, 1874-1964), Quotations book 2008


Knowledge comes, but wisdom lingers.

Alfred Lord Tennyson – Pritish poet (1809-1892), from his poem “Locksley Hall” (1835, published in “Poems”, 1842)


I will study, I will prepare, and my opportunity will come.

attributed to Abraham Lincoln – American politician, 1861-65 16th president (1809-1865)


Risk comes from not knowing what you’re doing.

Warren Buffett – American value investor, Chairman of Berkshire Hathaway (b. 1930), Quotations book 2002

On giants’ shoulders

If I have seen further it is by standing on ye shoulders of giants.

Sir Isaac Newton – English mathematician, physicist and astronomer (1643-1727), from a letter to Robert Hooke (5.2.1676)


Formal education will make you a living. Self-education will make you a fortune.

attributed to Jim Rohn – American entrepreneur, author and motivational trainer (1930-2009)

Think until it hurts

As a young man, I was told by Lord Thomson of Fleet that you have to think until it hurts before making a decision.

Paul Desmarais Jr. – Canadian entrepreneur (b. 1954) [Lord (Kenneth) Thomson of Fleet: Canadian publisher (1923-2006)], Quotations book 2014

Learn from mistakes

Failure is simply the opportunity to begin again, this time more intelligently.

Henry Ford – American engineer and industrialist (1863-1947), from “My Life and Work” (1922), Quotations book 2021


Experience is not what happens to a man;
it is what a man does with what happens to him.

Aldous Leonard Huxley – British writer (1894-1963), from “Texts & Pretexts: An Anthology With Commentaries” (1932), Quotations book 2008

Role model

Don’t worry that children never listen to you; worry that they are always watching you.

Robert Fulghum – American theologian and author (b. 1937), Quotations book 2007


You only learn who has been swimming naked when the tide goes out.

Warren Buffett – American value investor, Chairman of Berkshire Hathaway (b. 1930), in his letter to Berkshire Hathaway Shareholders (2007), Quotations book 2022


The dumb run, the clever wait, the wise go into the garden.

attributed to Rabindranath Tagore – born Robindronath Thakur, Bengali poet, Nobel Prize in literature 1913 (1861-1941)


When you see a good investment, look for a better investment.

Guy Spier – South African investor (b. 1966), from “The Education of a Value Investor” (2014)


An expert is a man who has made all the mistakes which can be made in a very narrow field.

Niels Bohr – Danish physician, Nobel Prize in physics 1922 (1885-1962), in a conversation with the German physicists and Nobel Prize laureates of 1932 and 1945, Werner Heisenberg (1901-1976) and Wolfgang Pauli (1900-1958), at the edge of a physics session in Copenhagen (1952)

En ekspert er en person, som har begået alle de fejl, som det er muligt at begå inden for et begrænset område.

Niels Bohr – danske fysiker, Nobelprisen i fysik 1922 (1885-1962), i et interview med den tyske fysikere og nobelpristagere fra 1932 og 1945, Werner Heisenberg (1901-1976) og Wolfgang Pauli (1900-1958) på randen af fysikere mødes i København (1952)


Even when the experts all agree, they may well be mistaken.

Bertrand Russell – British philosopher and mathematician, Nobel Prize in literature 1950 (1872-1970), from “On the Value of Scepticism” (first page), in “Sceptical Essays” (London 1924)


Education is the most powerfull weapon we can use to change the world.

Nelson Mandela – South African anti apartheid activist and politician, 1994-99 president, Nobel Peace Prize (1918-2013)


Where is the wisdom we have lost in knowledge?

Where is the knowledge we have lost in information?

Thomas Stearns Eliot – English-born American writer, Nobel Prize in literature 1948 (1888-1965)

Learn from mistakes

It’s good to learn from mistakes. It’s better to learn from other people’s mistakes.

Warren Buffett – American Value investor, Chairman of Berkshire Hathaway (b. 1930), Quotations book 2016

Changing our thinking

The world as we have created it is a process of our thinking. It cannot be changed without changing our thinking.

following Albert Einstein – German physicist, Nobel prize in physics 1921 (1879-1955)


Wenn Sie jemandem eine Frage stellen, warten Sie auf die Antwort.

Business-philosophy of Edward Valenti (b. 1948) and Barry Becher (1941-2012) – American infomercial pioneers (Ginsu knives)


Truth is stronger than fiction.

Mark Twain – born Samuel Langhorne Clemens, American writer (1835-1910), from “Following the Equator” (“Pudd’nhead Wilson’s New Calendar”, chapter XV, 1897)


A wise man seeks Wisdom; a madman thinks that he has found it.

Persian proverb


All experience is an arch to build upon.

Henry Brooks Adams – American historian (1838-1918)


L’intuizione, è l’intelligenza che commette un eccesso di velocità.

proverbio italiano – Libretto delle citazioni 2020


Every man has a right to be wrong in his opinions. But no man has a right to be wrong about his facts.

attributed to Bernard M. Baruch – American financier, adviser to several American presidents (1870-1965)


The important thing is to know what you know and know what you don’t know.

Warren Buffett – American value investor, Chairman of Berkshire Hathaway (b. 1930), from an interview with “TheMarker” (“Haaretz”, March 23, 2011)


A fool often fails because he thinks what is difficult is easy, a wise man because he thinks what is easy is difficult.

John Churton Collins – British writer (1848-1908), Quotations book 2007


The technique of infamy is to start two lies at once and get people arguing which is the truth.

Ezra W. L. Pound – American poet and critic  (1885-1972)


Investment in knowledge pays the best interest.

Benjamin Franklin – American politician, writer and scientist (1706-1790), Quotations book 2002


Face reality, even when doing so is uncomfortable, and communicate candidly, even when doing so may sting.

Jack Welch – born John Francis Welch jr., legendary American manager: General Electric (1935-2020), Fortune 1999: Manager of the Century

Think more

People calculate too much and think too little.

Charlie Munger – Vice Chairman of Berkshire Hathaway (b. 1924), at the annual Berkshire Hathaway shareholder’s meeting (2002), Quotations book 2021

Explaining the world with words or with mathematical formulas

Since the mathematicians have invaded the theory of relativity, I do not understand it myself anymore.

attributed to Albert Einstein – German physicist, Nobel Prize in physics 1921 (1879-1955), Quotations book 2008


Simplicity is the ultimate sophistication.

wisdom, often attributed to Leonardo da Vinci – Italian polymath (1452 – 1519), Quotations book 2018


Criticism is the fertilizer of learning.

attributed to Sir John Marks Templeton – value investor and philanthropist (1912-2008), Quotations book 2018


Experience is not enough in itself – it has to be weighed, ordered and digested, and we have to draw the right conclusions from it.

Michel de Montaigne – French writer and philosopher (1533-1592), Quotations book 2010


Genius I cannot claim nor even extra brightness, but perseverance all can have.

Woodrow Wilson – American politician, 1913-21 28th president, Nobel Peace prize 1919 (1856-1924), from his shorthand diary of 1876


In a knowledge economy, a good business is a community with a purpose, not a piece of property.

Charles Handy – Irish author and management expert (b. 1932), Quotations book 2007


The things we really know are not the things we have merely read about or heard about, but the things we have lived, have experienced, have been sensible of.

Calvin Milton Woodward – American professor for mathematics and mechanical engineering (1837-1915), introduced practical project working at the Washington University, Quotations book 2012

The seven national crimes

I don’t think.
I don’t know.
I don’t care.
I am too busy.
I leave well enough alone.
I have no time to read and find out.
I am not interested.

William H. J. Boetcker – American presbyterian clergyman, born in Hamburg (1873-1962), published 1916

Seeking the truth

In seeking truth you have to get both sides of a story.

Walter Cronkite – American journalist (1916-2009)


Education is important, especially when it comes to dismantling prejudices. You can’t help being a prisoner within your own mind, but the least you can do is ensure that the cell is decently furnished.

Sir Peter Ustinov – English actor and writer (1921-2004), Quotations book 2017


A public-opinion poll is no substitute for thought.

Warren Buffett – American value investor, chairman of Berkshire Heathaway (b. 1930), Quotations book 2007

Courage to wisdom

Dare to be wise! Begin! He who postpones the hour for living aright is a bumpkin waiting for the river to stop.

Sapere aude, incipe. Vivendi qui recte prorogat horam, rusticus expectat dum defluat amnis.

Quintus Horatius Flaccus (Horaz) – Roman writer (65-8 B.C.), from “Epistularum liber primus” (c. 20 B.C.)


Minds are like parachutes – they function only when they are open.

wisdom, often attributed to Thomas Dewar, 1st Baron Dewar – Scottish entrepreneur and Whisky destiller (1864-1930), Quotations book 2018

Standard of knowledge

If we become increasingly humble about how little we know, we may be more eager to search.

Sir John Marks Templeton – value investor and philanthropist (1912-2008)

Lifelong Learning

I constantly see people rise in life who are not the smartest, sometimes not even the most diligent, but they are learning machines. They go to bed every night a little wiser than they were when they got up and boy, does that help, particularly when you have a long run ahead of you. Nothing has served me better in my long life than continuous learning.

Charlie Munger – Vice Chairman of Berkshire Hathaway (b. 1924), Quotations book 2011


The way of the sage is to act but not to compete.

from the Tao Te Ching – most significant proverb collection of Daoism (chapter 81, 4th century BC), according to a legend written by Lao Tzu (Chinese philosopher, c. 3rd to 5th century BC)


Nothing shapes our lives so much as the questions we ask, refuse to ask, or never dream of asking.

Sam Keen – American philosopher (b. 1931), Quotations book 2015


Invert, always invert.

Maxim of Carl Gustav Jacob Jacobi – born Jacques Simon, German methematician, founder of the mathematical and physical seminar in Königsberg (1804-1851)

Be wiser

Spend each day trying to be a little wiser than you were when you woke up.

Charlie Munger – Vice Chairman of Berkshire Hathaway (b. 1924), Quotations book 2014

Knowledge is power

Never assume! Ask, analyse, test, implement!

Bernd Keller – German company founder, CEO “tRUE STANDARD” (b. 1966)


How much better to get wisdom than gold, to get insight rather than silver.

The Bible, Proverbs 16:16 (NIV)


You can observe a lot just by watching.

Lawrence Peter “Yogi” Berra – American baseball player and -manager (1925-2015)

Think for yourself

You have to think for yourself.

Warren Buffett – American value investor, Chairman of Berkshire Hathaway (b. 1930), in U.S. News and World Report (June 1994)


When a wise man points to the moon, the fool looks at the finger.

Chinese proverb – Quotations book 2007

Decide brave

Most decisions should probably be made with somewhere around 70% of the information you wish you had. If you wait for 90%, in most cases, you’re probably being slow.

Jeffrey P. “Jeff” Bezos – American company founder: Amazon (b. 1964), in his letter to the shareholders (2016), Quotations book 2020


The best vision is insight.

Malcolm S. Forbes – American publisher, Forbes Magazine (1919-1990)

Being right

You are neither right nor wrong because the crowd disagrees with you. You are right because your data and reasoning are right.

Benjamin Graham – born Benjamin Großbaum, American investor and inventor of systematic stocks analysis (1894-1976)


You need to fill your mind with various competing thoughts and decide which make sense.

Warren Buffett – American value investor, Chairman of Berkshire Hathaway (b. 1930), at the BRK Annual Meeting (May 2007)

La pensée

Notre tête est ronde pour permettre à la pensée de changer de direction.

Francis Picabia – peintre, graphiste et écrivain français (1879-1953), Brochure de citation 2013

Great company

Surround yourself with people smarter than you.

Slogan of George M. “The Boss” Steinbrenner III – American entrepreneur (1930-2010), known as owner of the New York Yankees, Quotations book 2014


Ett gott samvete beror ofta på dåligt minne.

Swedish proverb, published in a collection by Gunnel (b. 1941) and Kjell Swärd (b. 1937)


Miracles are not contrary to nature only contrary to what we know about nature.

in the style of Augustine of Hippo – known as Aurelius Augustinus, early Christian theologian and philosopher, one of the four Latin Doctors of Church (354-430), Quotations book 2012

Ask good

The better the question. The better the answer. The better the world works.

Slogan by Ernst & Young, business consulting company


I never learned anything while I was talking.

Larry King – born Lawrence Harvey Zeiger, American journalist (1933-2021), Quotations book 2007

The three sieves

Someone came to the wise Socrates and said: “Listen Socrates, I have to tell you something!”
“Hold on!”, the wise man stopped him. “Did you put through the three sieves what you want to tell me?”
“Three sieves?”, the other one asked in amazement.
“Yes, my friend! Let’s try if this, you want to tell me, passes through the three sieves: The first sieve is the one of truth. Did you examine whether what you were about to tell me was true?”
“Well, no, not really. I just overheard the Story …”
“Ah! Well, then you must have used the second sieve, the sieve of good? Is it something good that you are about to tell me?”
The other man said hesitantly: “Hm, no … on the contrary …”
“Hm …”, the wise man interrupted him. “Let us use the third sieve then, the sieve of necessity. Is it absolutely necessary for you to tell me what you are so exited about?”
“No, not really necessary …”
“Well”, Socrates said with a smile. “If the story you are about to tell me isn’t true, good, or necessary, just forget it and don’t bother me with it anymore.”

anecdote about Socrates – Greek philosopher (469-399 B.C), some sources cite Plato (Greek philosopher, c. 428-348 v. Chr.) or “the young Polimus” as other Person, Quotations book 2018

Lift your voice

Fools multiply when wise men are silent.

Saying – Quotations book 2021

Behave wisely

History teaches us that men and nations behave wisely once they have exhausted all other alternatives.

Abba Eban – born Aubrey Solomon Eban, Irsaeli politician and diplomat (1915-2002), in a speech in London on December 16th, 1970, Quotations book 2012


Those who cannot remember the past are condemned to repeat it.

George Santayana – born Jorge Augustín Nicolás Ruiz de Santayana, Spanish philosopher (1863-1952), from “Reason in Common Sense” (1906), the first book of “The Life of Reason”, Quotations book 2010


Example would avail ten times more than precept.

Charles James Fox – British politician (1749-1806), from his speech on expenditure of public money in barracks (April 8th, 1796), Quotations book 2021


Those who keep learning will keep rising in life.

Charlie Munger – Vice Chairman of Berkshire Hathaway (b. 1924), from his USC School of Law Commencement speech (May 13th, 2007)

Knowledge is power

For Knowledge itself is power.

Nam et ipsa scientia potestas est.

Sir Francis Bacon – English philosopher, politician and writer (1561-1626), from “De Haeresibus” (“Of Heresies”) in “Meditationes sacrae” (1597)


Whenever you find yourself on the side of the majority, it is time to pause and reflect.

Mark Twain – born Samuel Langhorne Clemens, American writer (1835-1910), from his note book (published 1935), Quotations book 2008


The voice of intelligence…is drowned out by the roar of fear. It is ignored by the voice of desire. It is contradicted by the voice of shame. It is biased by hate and extinguished by anger. Most of all it is silenced by ignorance.

Dr. Karl Augustus Menninger – American pyschiatrist, co-founder of Menninger clinic (1893-1990)


To be able to enjoy one’s past life is to live twice.

Hoc est vivere bis vita posse priore frui.

Marcus Valerius Martialis – Roman poet (c. 40-103), from “Epigrammaton libri duodecim”, book X, epigramme 23 (c. 85-103)


Patientia comes est sapientiae.

Patience is the companion of wisdom.

Augustine of Hippo – known as Aurelius Augustinus, early Christian theologian and philosopher, one of the four Latin Doctors of Church (354-430), from “De patientia” (c. 418), Quotations book 2014


It is very hard to lie, if one doesn’t know the truth.

Kutya nehéz úgy hazudni, ha az ember nem ösmeri az igazságot.

Péter Esterházy – Hungarian writer (1950-2016), from “Harmonia Caelestis” (2000)


Knowledge is like a baobab tree – one person’s arms are not enough to encompass it.

African proverb


The beautiful thing about learning is nobody can take it away from you.

attributed to B.B. King – American blues musician (1925-2015), Quotations book 2011

Free Press

The free press is a cornerstone of democracy.
People have a need to know.
Journalists have a right to tell.
Finding the facts can be difficult.
Reporting the story can be dangerous.
Freedom includes the right to be outrageous.
Responsibility includes the duty to be fair.
News is history in the making.
Journalists provide the first draft of history.
A free press, at its best, reveals the truth.

slogan at the Newseum in Washington D.C. – Quotations book 2018


Scientiam non ut possessio habeatur, sed sicut aliquid ab eo mutuatum.

Wisdom is not held by men as a possession, but as something on loan.

Thomas Aquinas – Italian philosopher and theologian (1224/25-1274), from his comment on Aristotle’s Metaphysics “Sententia libri Metaphysicae” (lib. 1 l. 3 n. 13)


People don’t care how much you know until they know how much you care.

Wisdom – Quotations book 2008


Chances are, things have changed enough so that whatever made you a success thirty years ago doesn’t work anymore.

Ralph Wanger – American fund manager (b. 1934)


Knowledge is of no value unless you put it into practice.



Not all readers become leaders. But all leaders must be readers.

Harry S. Truman – American politician, 1945-52 33rd president (1884-1972), Quotations book 2014

Best Investment

The best investment with the least risk and the greatest dividend is giving.

Sir John Marks Templeton – value investor and philanthropist (1912-2008), Quotations book 2012

Never stop asking

“Learn from yesterday, live for today, hope for tomorrow. The most important thing is not to stop asking questions.

attributed to Albert Einstein – German physicist, Nobel prize in Physics 1921 (1879-1955)


Never delegate understanding.

Eames Demetrios – American artist and photographer (b. 1962), from “An Eames Primer” (2001), a book about his grandparents, the designer couple Charles and Ray Eames, Quotations book 2019


Facts do not cease to exist just because they are ignored.

Aldous Leonard Huxley – British writer (1894-1963), from “Proper Studies” (1927), Quotations book 2014


A wise man will make more opportunities than he finds.

Sir Francis Bacon – English philosopher, politician and writer (1561-1626), from his essay “Of Adversity” (1625)

Everything starts small

The beginnings of all things are small.

Omnium enim rerum principia parva sunt.

Marcus Tullius Cicero – Roman politician (106-43 B.C.), from “On the ends of good and evil”, book V, chapter XXI (“De finibus bonorum et malorum”, 45 B.C.), Quotations book 2021


A lie will fly around the whole world while the truth is getting its boots on.

attributed to Mark Twain – Born Samuel Langhorne Clemens, American writer (1835-1910)


In a time of drastic change it is the learners who inherit the future. The learned usually find themselves equipped to live in a world that no longer exists.

Eric Hoffer – American writer and philosopher (1898 or 1902-1983), from “Reflections on the Human Condition” (1973), Quotations book 2020

Think first

The wise man ought not to think afterwards but rather to think beforehand.

Oὐ μετανοεῖν ἀλλὰ προνοεῖν χρὴ τὸν ἄνδρα τὸν σοφόν.

Axiopistos – Greek forger (ca. 4th century BC), who published two books under the name of the Sicilian comedy poet Epicharmus (ca. 540-460 BC), noted as “Fragmenta Pseudepicharmea 280”


Seek advice from every wise person and do not despise any useful counsel.

The Bible, Tobit 4:18 (NRSV) – Quotations book 2022

Question mark

The question mark is more powerful than the exclamation point.

Dale Carnegie – born Dale Carnagey, American author and personality coach (1888-1955)


You can learn a lot just by asking.

Warren Buffett – American value investor, Chairman of Berkshire Hathaway (b. 1930)

Spiritually poor

This country cannot afford to be materially rich and spiritually poor.

John F. Kennedy – American politician, 1961-63 35th president (1917-1963), from his State of the Union Address on January 14th, 1963

Change your mind

When the facts change, I change my mind. What do you do, Sir?

attributed to John Maynard Keynes – British economist and investor (1883-1946), as a reaction on the critics, he would change his mind very often, Quotations book 2012


Brilliance is the ability to simplify a mass amount of information into a simple yes/no decision.

Warren Buffett – American value investor, Chairman of Berkshire Hathaway (b. 1930), Quotations book 2017

Learn from history

History doesn’t repeat itself but it often rhymes.

proverb, falsely attributed to Mark Twain – born Samuel Langhorne Clemens, American writer (1835-1910), Quotations book 2022

Competitive advantage knowledge

Knowledge has become the key economic resource and the dominant, if not the only, source of competitive advantage.

Peter F. Drucker – Austrian-born American management expert (1909-2005), from “The Age of Social Transformation” (“The Atlantic Monthly”, November 1994), Quotations book 2022


You cannot teach a man anything; you can only help him to discover it in himself.

Galileo Galilei – Italian astronomist und physicist (1564-1642), Quotations book 2005

Profit from advice

Many receive advice, only the wise profit from it.

Publilius Syrus – Roman poet (1st century BC)


Research your existing portfolio with the same energy and passion as new ideas

Rick di Mascio – British portfolio manager, CEO: Inalytics (b. 1957), Quotations book 2021

Good conversation

A good conversation is like a miniskirt, short enough to retain interest, but long enough to cover the subject.

American wisdom – Quotations book 2021

Yes and No

The oldest, shortest words, “yes” and “no”, are those which require the most thoughts.

attributed to Pythagoras of Samos – Greek philosopher and mathematician (c. 570-501 B.C.), Quotations book 2017


The smarter the journalists are, the better off society is. For to a degree, people read the press to inform themselves and the better the teacher, the better the student body.

Warren Buffett – American value investor, Chairman of Berkshire Hathaway (b. 1930), Quotations book 2010


Knowing what you don’t know is more useful than being brilliant.

Charlie Munger – Vice Chairman of Berkshire Hathaway (b. 1924), from “A Fireside Chat With Charlie Munger” (“Wall Street Journal”, September 12th, 2014)


Travel improves the mind wonderfully, and does away with all one’s prejudices.

Oscar Wilde – Irish writer (1854-1900), from his fairytale “The Remarkable Rocket”, published in “Der The Happy Prince and Other Stories” (1888), Quotations book 2018


It’s hardest to see what’s wrong about what seems normal.

Jane S. Fonda – American actress and writer (b. 1937), in “My Life So Far”, act two, chapter 1 “1968” (2010)


Nobody ever learned anything from the second hit of a horse.

attributed to R. Philip Hanes – American entrepreneur and author (1926-2011)

Learn from mistakes

With failure comes opportunity.

Glenn Llopis – Cuban-American leadership and business strategy author and consultant (b. 1966), from his book “Earning Serendipity: 4 Skills for Creating and Sustaining Good Fortune in Your Work” (2009)


Who questions much, shall learn much, and retain much.

Sir Francis Bacon – English philosopher, politician and writer (1561-1626), Quotations book 2008


The electric light did not come from the continuous improvement of the candle.

Dr. Oren Harari – American business professor at the University of San Francisco and author of several management books (1949-2010)


For a seed to achieve its greatest expression, it must come completely undone. The shell cracks, its insides come out and everything changes. To someone who doesn’t understand growth, it would look like complete destruction.

Cynthia Occelli, JD – American author and entrepreneur


He uses statistics as a drunken man uses lamp posts – for support rather than illumination.

Andrew Lang – Scottish writer (1844-1912)

Back to the roots

“Doc, I have an earache.”
2000 B.C. “Here, eat this root.”
1000 B.C. “That root is heathen, say this prayer.”
1850 A.D. “Prayer is superstition, drink this potion.”
1930 “That potion is snake oil, swallow this pill.”
1970 “That pill is ineffective, take this antibiotic.”
2000 “That antibiotic is artificial, here, eat this root.”

Anonymus – “History of Medicine”, spread on the Internet between 1997 and 1998, source: 106 utne reader,, Quotations book 2009


Behold, the fool saith, “Put not all thine eggs in the one basket” – which is but a manner of saying, “Scatter your money and your attention”;

but the wise man saith, “Put all your eggs in the one basket and – watch the basket!”

Mark Twain – born Samuel Langhorne Clemens, American writer (1835-1910), Quotations book 2008


If you wish to know the road up the mountain, ask the man who goes back and forth on it..

from the Zenrin Kushu – collection of Zen quotes from the 15th century


There are many things of which a wise man might wish to be ignorant.

Ralph Waldo Emerson – American writer (1803-1882), from “Demonology” (1877)

New paths

It would be absurd and self-contradictory to expect to achieve things, which have never yet been done can be done, other than through means that have never yet been tried.

Insanum quiddam esset, et in se contrarium, existimare ea, quae adhuc nunquam facta sunt, fieri posse, nisi per modos adhuc nunquam tentatos.

Sir Francis Bacon – English philosopher, politician and writer (1561-1626), from “New organon, or true directions concerning the interpretation of nature”, aphorism VI. (“Novum Organum, sive indicia vera de Interpretatione Naturae”, 1620)

Starting minds

Mr. Drucker ist one of those writers to whom almost anything can be forgiven because he not only has a mind of his own, but has the gift of starting other minds along a stimulating line of thought.

Sir Winston L. Churchill – British politician, 1940-45 and 1951-55 Prime Minister, Nobel Prize in literature 1953 (1874-1965), about Peter F. Drucker, Austrian-born management expert (1909-2005)


Today progress happens so fast that when someone declares a problem to be completely impracticable and unsolvable in the next moment he is interrupted by someone else who has already solved and realized the Problem.

attributed to Albert Einstein – German physicist, Nobel prize in Physics 1921 (1879-1955)

Learning from the world

What the pupil must learn, if he learns anything at all, is that the world will do most of the work for you, provided you cooperate with it by identifying how it really works and aligning with those realities. If we do not let the world teach us, it teaches us a lesson.

attributed to Joseph Tussman – American philosopher and educator (1914-2005)

Doing well

Thinking well is wise; planning well, wiser;
doing well wisest and best of all.

Persian proverb – Quotations book 2017

Knowledge worker

The most important, and indeed the truly unique, contribution of management in the 20th century was the fifty-fold increase in the productivity of the manual worker in manufacturing. The most important contribution management needs to make in the 21st century is similarly to increase the productivity of knowledge work and the knowledge worker..

Peter F. Drucker – Austrian-born American management expert (1909-2005), Quotations book 2006

Truth wins

Lies run sprints but the truth runs marathons.

Michael Jackson – American musician and singer (1958-2009), Quotations book 2013

Courage for truth

During times of universal deceit, telling the truth becomes a revolutionary act.