Doctors cut, burn, and torture the sick, and then demand of them an undeserved fee for such services.

You won't discover the limits of the soul, however far you go.

Dogs bark at a person whom they do not know.

Those who are awake all live in the same world. Those who are asleep live in their own worlds.

Men who wish to know about the world must learn about it in its particular details.

Heraclitus somewhere says that all things are in process and nothing stays still, and likening existing things to the stream of a river he says that you would not step twice into the same river.

Change is the only constant.