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.

Ordinary people seem not to realize that those who really apply themselves in the right way to philosophy are directly and of their own accord preparing themselves for dying and death.

The universe really is motion & nothing else.

High thinking is inconsistent with a complicated material life based on high speed and imposed on us by mammon worship.

There is no limit to which a man will not go to avoid thinking.

Even people who aren't geniuses can outthink the rest of mankind if they develop certain thinking habits.