Young people nowadays love luxury; they have bad manners and contempt for authority. They show disrespect for old people... contradict their parents, talk constantly in front of company, gobble their food and tyrannize their teachers.

A man can no more make a safe use of wealth without reason than he can of a horse without a bridle.

Get not your friends by bare compliments but by giving them sensible tokens of your love.

The right way to begin is to pay attention to the young, and make them just as good as possible.

To know, is to know that you know nothing.

I know that I am intelligent, because I know that I know nothing.

If I tell you that I would be disobeying the god and on that account it is impossible for me to keep quiet, you won't be persuaded by me, taking it that I am ionizing. And if I tell you that it is the greatest good for a human being to have discussions every day about virtue and the other things you hear me talking about, examining myself and others, and that the unexamined life is not livable for a human being, you will be even less persuaded.