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

No man undertakes a trade he has not learned, even the meanest; yet everyone thinks himself sufficiently qualified for the hardest of all trades, that of government.

If you would seek health, look first to the spine.

Flattery is like friendship in show, but not in fruit.

The young people of today think of nothing but themselves. They have no reverence for parents or old age. They are impatient of all restraint. They talk as if they alone knew everything and what passes for wisdom with us is foolishness with them. As for girls, they are forward, immodest and unwomanly in speech, behaviour and dress.

The reason why we have to acquire wealth is the body, because we are slaves in its service.

The perfect human being is all human beings put together, it is a collective, it is all of us together that make perfection.