If there is no price to be paid, it is also not of value.

Women marry men hoping they will change. Men marry women hoping they will not.

It is abhorrent to me when a fine intelligence is paired with an unsavory character.

When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity.

It was the experience of mystery - even if mixed with fear - that engendered religion.

What physics looks for: The simplest possible system of thought which will bind together the observed facts.

Imagination is more important than knowledge. For knowledge is limited to all we now know and understand, while imagination embraces the entire world, and all there ever will be to know and understand.