"By harming a horse, you decrease his excellence. Thus, by harming a person, you decrease their excellence."

"Those who don't know must learn from those who do."

"The tools that would teach men their own use would be beyond price."

"We ought to esteem it of the greatest importance that the fictions which children first hear should be adapted in the most perfect manner to the promotion of virtue."

"In order for man to succeed in life, God provided him with two means, education and physical activity. Not separately, one for the soul and the other for the body, but for the two together. With these means, man can attain perfection."

"Not only is the old man twice a child, but also the man who is drunk."

"Beauty is certainly a soft, smooth, slippery thing, and therefore of a nature which easily slips in and permeates our souls."

"Appearance tyrannizes over truth."

"Philosophy, Socrates, if pursued in moderation and at the proper age, is an elegant accomplishment, but too much philosophy is the ruin of human life."

"Men say that everyone is naturally a lover of himself, and that it is right that it should be so. This is a mistake; for in fact the cause of all the blunders committed by man arises from this excessive self-love. For the lover is blinded by the object loved, so that he passes a wrong judgment upon what is just, good, and beautiful, thinking that he ought always to honor what belongs to himself, in preference to truth. For he who intends to be a great man ought to love neither himself nor his own things, but only what is just, whether it happens to be done by himself or by another."