On the contrary, it's because someone knows something about it that we can't talk about physics. It's the things that nobody knows about that we can discuss. We can talk about the weather; we can talk about social problems; we can talk about psychology; we can talk about international finance... so it's the subject that nobody knows anything about that we can all talk about!

Principles You can't say A is made of B or vice versa. All mass is interaction.

It doesn't seem to me that this fantastically marvelous universe, this tremendous range of time and space and different kinds of animals, and all the different…

On the infrequent occasions when I have been called upon in a formal place to play the bongo drums, the introducer never seems to find it necessary to mention …

How is this? Ought not the petitioner to speak first, and the conqueror to listen in silence?

What's on your mind, if you will allow the overstatement?

Although there exist many thousand subjects for elegant conversation, there are persons who cannot meet a cripple without talking about feet.