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.

While I am describing to you how Nature works, you won't understand why Nature works that way. But you see, nobody understands that.

Scientific knowledge is a body of statements of varying degrees of certainty -- some most unsure, some nearly sure, none absolutely certain.

It is necessary for the very existence of science that minds exist which do not allow that nature must satisfy some preconceived conditions.

Why make yourself miserable saying things like, "Why do we have such bad luck? What has God done to us? What have we done to deserve this?" - all of which, if you understand reality and take it completely into your heart, are irrelevant and unsolvable. They are just things that nobody can know. Your situation is just an accident of life.

Turbulence is the most important unsolved problem of classical physics.

Maybe that is why young people make success. They don't know enough.