All knowledge is but remembrance.

Moderation, which consists in indifference about little things, and in a prudent and well-proportioned zeal about things of importance, can proceed from nothing but true knowledge, which has its foundation in self-acquaintance.

Arithmetic is a kind of knowledge in which the best natures should be trained, and which must not be given up.

Music and rhythm find their way into the secret places of the soul

If particulars are to have meaning, there must be universals.

The true champion of justice, if he intends to survive even for a short time, must necessarily confine himself to private life and leave politics alone.

Happiness springs from doing good and helping others.