Of course, you only live one life, and you make all your mistakes, and learn what not to do, and that's the end of you.

But see that the imagination of nature is far, far greater than the imagination of man.

Science is the organized skepticism in the reliability of expert opinion

I think a power to do something is of value. Whether the result is a good thing or a bad thing depends on how it is used, but the power is a value.

What is the fundamental hypothesis of science, the fundamental philosophy? We stated it in the first chapter: the sole test of the validity of any idea is experiment. ... If we are told that the same experiment will always produce the same result, that is all very well, but if when we try it, it does not, then it does not. We just have to take what we see, and then formulate all the rest of our ideas in terms of our actual experience.

[Quantum mechanics] describes nature as absurd from the point of view of common sense. And yet it fully agrees with experiment. So I hope you can accept nature as She is - absurd.

Mathematics is a language plus reasoning. It's like a language plus logic. Mathematics is a tool for reasoning.