I have hardly ever known a mathematician who was capable of reasoning.

This world is indeed a living being endowed with a soul and intelligence ... a single visible living entity containing all other living entities, which by their nature are all related.

The love of the gods belongs to anyone who has given to true virtue and nourished it, and if any human being could become immortal, it would be he.

For a man to conquer himself is the first and noblest of all victories... The first and greatest victory is to conquer yourself; to be conquered by yourself is of all things most shameful and vile.

Of all the animals, the boy is the most unmanageable, inasmuch as he has the fountain of reason in him not yet regulated.

Desires are only the lack of something: and those who have the greatest desires are in a worse condition than those who have none, or very slight ones.

Knowledge is true opinion.