The intelligent man finds almost everything ridiculous, the sensible man almost nothing.

They teach in academies far too many things, and far too much that is useless.

In the end we retain from our studies only that which we practically apply.

Instruction does much, but encouragement everything."

(Letter to A.F. Oeser, Nov. 9, 1768)

The formation of one's character ought to be everyone's chief aim.

It is in human nature to relax, when not compelled by personal advantage or disadvantage.