Everything changes and nothing stands still.

Men who are lovers of wisdom [i.e., philosophers] must be inquirers into many things.

You cannot step into the same river twice.

There is nothing permanent in the world except change.

Hide our ignorance as we will, an evening of wine soon reveals it.

The awake share a common world, but the asleep turn aside into private worlds.

Presumption must be quenched even more than a fire.