Brief and clear

Whatever you are teaching be brief so that impressionable minds may readily understand what you’ve said, and hold fast to it.

Quidquid praecipies, esto brevis, ut cito dicta, percipiant animi dociles teneantque fideles.

Quintus Horatius Flaccus (Horaz) – Roman writer (65-8 B.C.), from “Ars poetica” 335 (c. 19 B.C.), Quotations book 2020