All the gold which is under or upon the earth is not enough to give in exchange for virtue.

Ignorance is the root cause of all difficulties.

A fit of laughter, which has been indulged to excess, almost always produces a violent reaction.

The contemplation of beauty causes the soul to grow wings.

More will be accomplished, and better, and with more ease, if every man does what he is best fitted to do, and nothing else.

The orators and the despots have the least power in their cities ... since they do nothing that they wish to do, practically speaking, though they do whatever they think to be best.

A certain portion of mankind do not believe at all in the existence of the gods.