The difficulty really is psychological and exists in the perpetual torment that results from your saying to yourself, "But how can it be like that?" which is a reflection of uncontrolled but utterly vain desire to see it in terms of something familiar. ... If you will simply admit that maybe Nature does behave like this, you will find her a delightful, entrancing thing. Do not keep saying to yourself, if you can possible avoid it, "But how can it be like that?" because you will get 'down the drain', into a blind alley from which nobody has escaped. Nobody knows how it can be like that.

There is nothing in biology yet found that indicates the inevitability of death. This suggests to me that it is not at all inevitable and that it is only a matter of time before biologists discover what it is that is causing us the trouble.

This is not very important what I'm doing. I'm just proving something.

There is no authority who decides what is a good idea.

It is important to realize that in physics today, we have no knowledge of what energy is

I would rather have questions that can't be answered than answers that can't be questioned.

If all of mathematics disappeared, physics would be set back by exactly one week.