A very great deal more truth can become known than can be proven.

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

Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.

You have no responsibility to live up to what other people think you ought to accomplish. I have no responsibility to be like they expect me to be. It's their mistake, not my failing.

I learned very early the difference between knowing the name of something and knowing something.

If you thought that science was certain - well, that is just an error on your part.

Philosophy of science is about as useful to scientists as ornithology is to birds.

The first principle is that you must not fool yourself and you are the easiest person to fool.

We are trying to prove ourselves wrong as quickly as possible, because only in that way can we find progress.

If I could explain it to the average person, I wouldn't have been worth the Nobel Prize.

But there is nothing in biology yet found that indicates the inevitability of death.

I don't get up in the morning and think my mission is to end Britain. I do get up in the morning and think that my mission is to end poverty.

There are no halfway measures against bigotry, hatred and anti-Semitism. It's got to be rejected totally.

The only time the word baby doesn't scare me is the time that it should, when it is what a man calls me.

Other kids would take their parents to the toy store and I'd take my mom to the record store.

Self-improveme nt is no more God's plan than self-salvation.

Man with the great M is only an ideal, the species only something thought of.

True, the lion is a mighty, noble animal, but it is an animal nevertheless...

Your character is your accumulation of your thoughts, habits and priorities on a day-to-day basis.

Frank gave Leo a confused smile- like he couldn't decide whether to gloat or to thank Leo for being a doofus- but he cheerfully let Hazel drag him along.

I was very close to my mother, and her death, which left a gaping hole in my life, has been very difficult for me and my father in a lot of ways.