There is far greater peril in buying knowledge than in buying meat and drink.

He who has knowledge of the just and the good and beautiful ... will not, when in earnest, write them in ink.

The qualities which a man seeks in his beloved are those characteristics of his own soul, whether he knows it or not.

At the Egyptian city of Naucratis there was a famous old god whose name was Theuth; the bird which is called the Ibis was sacred to him, and he was the inventor of many arts, such as arithmetic and calculation and geometry and astronomy and draughts and dice, but his great discovery was the use of letters.

But of the heaven which is above the heavens, what earthly poet ever did or ever will sing worthily?

The philosopher whose dealings are with divine order himself acquires the characteristics of order and divinity.

Consider how great is the encouragement which all the world gives to the lover; neither is he supposed to be doing anything dishonourable; but if he succeeds he is praised, and if he fail he is blamed.