Richard P. Feynman

If there is something very slightly wrong in our definition of the theories, then the full mathematical rigor may convert these errors…

— Richard P. Feynman

Einstein's gravitational theory, which is said to be the greatest single achievement of theoretical physics, resulted in beautiful relations connecting gravitational phenomena…

— Richard P. Feynman

It is the facts that matter, not the proofs. Physics can progress without the proofs, but we can't go on without the…

— Richard P. Feynman

Doubt is clearly a value in science. It is important to doubt and that the doubt is not a fearful thing, but…

— Richard P. Feynman

We scientists are clever — too clever — are you not satisfied? Is four square miles in one bomb not enough? Men…

— Richard P. Feynman

If you can find any other view of the world which agrees over the entire range where things have already been observed,…

— Richard P. Feynman

We've learned from experience that the truth will come out.

— Richard P. Feynman

There are all kinds of interesting questions that come from a knowledge of science, which only adds to the excitement and mystery…

— Richard P. Feynman

I do believe that there is a conflict between science and religion ... the spirit or attitude toward the facts is different…

— Richard P. Feynman

From a long view of the history of mankind the most significant event of the nineteenth century will be judged as Maxwell's…

— Richard P. Feynman

You see, one thing is, I can live with doubt and uncertainty and not knowing. I have approximate answers and possible beliefs…

— Richard P. Feynman

I have the advantage of having found out how hard it is to get to really know something. How careful you have…

— Richard P. Feynman

In its efforts to learn as much as possible about nature, modern physics has found that certain things can never be "known"…

— Richard P. Feynman

Any schemes - such as 'think of symmetry laws', or 'put the information in mathematical form', or 'guess equations'- are known to…

— Richard P. Feynman

We absolutely must leave room for doubt or there is no progress and there is no learning. There is no learning without…

— Richard P. Feynman

When you're thinking about something that you don't understand, you have a terrible, uncomfortable feeling called confusion... Now, is the confusion's because…

— Richard P. Feynman

We need to teach how doubt is not to be feared but welcomed. It's OK to say, "I don't know."

— Richard P. Feynman

I love to think. I once considered taking drugs as an attempt to better understand an altered state of mind; however, I…

— Richard P. Feynman

It turns out that all life is interconnected with all other life.

— Richard P. Feynman

We're always, by the way, in fundamental physics, always trying to investigate those things in which we don't understand the conclusions. After…

— Richard P. Feynman

This attitude of mind - this attitude of uncertainty - is vital to the scientist, and it is this attitude of mind…

— Richard P. Feynman

What one fool can understand, another can.

— Richard P. Feynman

Agnostic for me would be trying to weasel out and sound a little nicer than I am about this.

— Richard P. Feynman

The exception tests the rule.

— Richard P. Feynman

There is a computer disease that anybody who works with computers knows about. It's a very serious disease and it interferes completely…

— Richard P. Feynman