One cannot understand... the universality of laws of nature, the relationship of things, without an understanding of mathematics. There is no other w….

So far as we know, all the fundamental laws of physics, like Newton's equations, are reversible..

So, ultimately, in order to understand nature it may be necessary to have a deeper understanding of mathematical relationships. But the real reason i….

We have found it of paramount importance that in order to progress, we must recognize our ignorance and leave room for doubt..

It's amazing how many people even today use a computer to do something you can do with a pencil and paper in less time..

I don't like honors. I'm appreciated for the work that I did, and for people who appreciate it, and I notice that other physicists use my work. I don….

From a long view of the history of mankind, seen from, say, ten thousand years from now, there can be little doubt that the most significant event of….

We have this terrible struggle to try to explain things to people who have no reason to want to know..

Just as a poet often has license from the rules of grammar and pronunciation, we should like to ask for 'physicists' license from the rules of mathem….

The whole question of imagination in science is often misunderstood by people in other disciplines. ... They overlook the fact that whatever we are a….

Science is a way for us to not fool ourselves..

One does not, by knowing all the physical laws as we know them today, immediately obtain an understanding of anything much. I love only nature, and I….

The same equations have the same solutions.

There is no learning without having to pose a question. And a question requires doubt..

John von Neumann gave me an interesting idea: that you don't have to be responsible for the world that you're in. So I have developed a very powerful….

Phenomena complex-laws simple....Know what to leave out..

Know how to solve every problem that has been solved..

Nature isn't classical, dammit, and if you want to make a simulation of nature, you'd better make it quantum mechanical, and by golly it's a wonderfu….

Everything we know is only some kind of approximation, because we know that we do not know all the laws yet. Therefore, things must be learned only t….

When things are going well, something will go wrong. / When things just can't get any worse, they will. / Anytime things appear to be going better, y….

I am not interested in what today's mathematicians find interesting..