Mathematics is really an art, not a science.

If the tools are bad, nature's voice is muffled. If the tools are good, nature will give us a clear answer to a clear question.

That's what I learned from World War II. Things are always more complicated than most people believe.

The important thing is that we now have the tools to sequence all kinds of animals and plants and microbes - as well as humans. It is not important that we didn't actually finish the human sequence yet.

It is characteristic of all deep human problems that they are not to be approached without some humor and some bewilderment.

I think the fact that Aldous Huxley wrote Brave New World and talked about anthrax bombs probably helped because at least we... people had the understanding before the war began that's something we didn't want to get into.

I am saying that all predictions concerning climate are highly uncertain.