A wise man speaks because he has something to say; a fool because he has to say something.

The one who learns and learns and doesn't practice is like the one who plows and plows and never plants.

Those wretches who never have experienced the sweets of wisdom and virtue, but spend all their time in revels and debauches, sink downward day after day, and make their whole life one continued series of errors.

A library of wisdom, is more precious than all wealth, and all things that are desirable cannot be compared to it. Whoever therefore claims to be zealous of truth, of happiness, of wisdom or knowledge, must become a lover of books.

Thinking: the talking of the soul with itself.

According to Greek mythology, humans were originally created with four arms, four legs and a head with two faces. Fearing their power, Zeus split them into two separate parts, condemning them to spend their lives in search of their other halves.

False words are not only evil in themselves, but they infect the soul with evil.