"A man ought not to return evil for evil, as many think, since at no time ought we to do an injury to our neighbor."

"Wonder is the only beginning of philosophy."

"The whole life of the philosopher is a preparation for death."

"Music gives a soul to the universe, wings to the mind, flight to the imagination, a charm to sadness, gaiety and life to everything. It is the essence of order, and leads to all that is god, just, and beautiful, of which it is the invisible, but never less, dazzling, passionate, and eternal form."

"Either we shall find what it is we are seeking or at least we shall free ourselves from the persuasion that we know what we do not know."

"The wisest have the most authority."

"We are like people looking for something they have in their hands all the time; we're looking in all directions except at the thing we want, which is probably why we haven't found it."

"Because people want more and more possessions, they start wanting more money, and thus honor money more and excellence less. Accordingly, the wealthy become more honored, and the people of excellence less honored. With the majority now money-loving businessmen instead of lovers of victory and honor, the admirable rich men will be put into office, and the poor will be dishonored."

"Without any one teaching him he will recover his knowledge for himself, if he is only asked questions."

"They master certain pleasures because they are mastered by others, I fear this is not the right exchange to attain virtue, to exchange pleasures for pleasures, pains for pains, and fears for fears, the greater for the less like coins, but that they only valid currency for which all these things should be exchanged is wisdom ."