Richard Feynman

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

What one fool can do, another can.

I don't need a theory, I just want to know what the hell is going on.

I have no idea where I'm going. I have no idea where I'm going to be. So it's probably best that I don't know.

The more you learn, the more you learn how little you know.

The thing about science is that it's all about discovery. It's all about trying to find out what's going on.

It's a great thing to be able to say, 'I don't know.'

I don't believe in anything, but I have a lot of fun.

I have often thought that if there is any hell, it must be the place where there are no questions, only answers.

I just want to understand the world, and I find that the best way to do that is to ask a lot of questions.

I'm not a very good scientist. I'm just a very curious person.

The thing about science is that it's all about trying to prove yourself wrong.

It's not enough to be a good scientist. You have to be a good person too.

I don't believe in miracles, because I believe in science.

The only way to do great work is to love what you do.

For a successful technology, reality must take precedence over public relations, for nature cannot be fooled.

Religion is a culture of faith; science is a culture of doubt.

God was invented to explain mystery. God is always invented to explain those things that you do not understand.

It doesn't seem to me that this fantastically marvelous universe, this tremendous range of time and space and different kinds of animals, and all the different planets, and all these atoms with all their motions, and so on, all this complicated thing can merely be a stage so that God can watch human beings struggle for good and evil — which is the view that religion has. The stage is too big for the drama.

I was at a party once, and some woman said to me, 'You're a scientist, you know all about radiation. How much radiation is in a banana?' I said, 'A banana has about 1/1000th of a milligram of radium in it.' She said, 'Oh my God, I'm never eating a banana again!' I said, 'Well, you're getting more radiation from the concrete floor you're standing on.'