Ideas can only be useful if they come to life in the minds of many people.
Alexander von Humboldt – German scientist (1769-1859), in a letter to Ludwig Bollmann (Cumaná, Venezuela, October 15th, 1799)
Ideas can only be useful if they come to life in the minds of many people.
Alexander von Humboldt – German scientist (1769-1859), in a letter to Ludwig Bollmann (Cumaná, Venezuela, October 15th, 1799)