Men marry women with the hope they will never change. Women marry men with the hope they will change. Invariably they are both disappointed.

In living through this great epoch, it is difficult to reconcile oneself to the fact that one belongs to that mad, degenerate species that boasts of its free will. How I wish that somewhere there existed an island for those who are wise and of good will. In such a place even I should be an ardent patriot!

How many people are trapped in their everyday habits: part numb, part frightened, part indifferent? To have a better life we must keep choosing how we are living.

Scientists investigate that which already is; Engineers create that which has never been.

In my relativity theory I set up a clock at every point in space, but in reality I find it difficult to provide even one clock in my room.

As far as I'm concerned, I prefer silent vice to ostentatious virtue.

If people are good because they fear punishment, and hope for reward, then we are a sorry lot indeed.