The worthwhile problems are the ones you can really solve or help solve, the ones you can really contribute something to... No problem is too small or too trivial if we can really do something about it.

In those days, in Far Rockaway, there was a youth center for Jewish kids at the temple.... Somebody nominated me for president of the youth center. The elders began getting nervous, because I was an avowed atheist by that time.... I thought nature itself was so interesting that I didn't want it distorted like that. And so I gradually came to disbelieve the whole religion.

We've learned from experience that the truth will out.

The unanswerable mysteries... the attitude that all is uncertain... to summarize it - the humility of the intellect.

Agnostic for me would be trying to weasel out and sound a little nicer than I am about this.

For those who want some proof that physicists are human, the proof is in the idiocy of all the different units which they use for measuring energy.

The beauty that is there is also available for me, too. But I see a deeper beauty that isn't so readily available to others.... I don't see how studying a flower ever detracts from its beauty. It only adds