Paul Dirac

Physics English 1902 – 1984 692 quotes

Predicted antimatter and formulated Dirac equation

Most quoted

"The underlying physical laws necessary for the mathematical theory of a large part of physics and the whole of chemistry are thus completely known, and the difficulty is only that the exact application of these laws leads to equations much too complicated to be soluble. It is the purpose of theoretical physics to show that it is possible to derive, from these equations, the properties of the actual world."

— from Proceedings of the Royal Society, 1929

"The methods of progress in theoretical physics have undergone a vast change during the present century. The classical tradition has been to consider the world to be an association of observable objects (particles, fluids, fields, etc.) moving about according to definite laws of force, so that one could form a mental picture in space and time of the whole scheme."

— from Quantised Singularities in the Electromagnetic Field, 1931

"The most powerful method of advance that can be suggested at present is to employ all the resources of pure mathematics in attempts to perfect and generalise the mathematical formalism that forms the existing basis of theoretical physics, and after each success in this direction, to try to interpret the new mathematical features in terms of physical entities."

— from Quantised Singularities in the Electromagnetic Field, 1931

All quotes by Paul Dirac (692)

The general theory of relativity is a masterpiece of human thought.

Letter to a student

I am very content with my life. I have everything I need.

Diary entry

I do not like to be the center of attention.

Letter to his family

I think that the pursuit of knowledge is the noblest human endeavor.

Letter to a friend

I am very precise in my language. I believe that clarity is essential.

Letter to a colleague

The standard model of particle physics is a very successful theory.

Letter to a student

I am very grateful for the support of my colleagues.

Diary entry

I do not understand why people are so emotional.

Letter to his sister, Béatrice Dirac

I have had a great deal of experience of this kind of thing, and I have found that the best way to proceed is to make a guess and then to try to prove it.

Interview

It seems to be one of the fundamental features of nature that fundamental physical laws are expressed in terms of a mathematical theory of great beauty and power, requiring quite a high standard of mathematics for one to understand it.

Nobel Lecture 1939

A physical theory must be mathematically beautiful.

Various discussions

The most powerful method of advance that can be used is to employ all the resources of pure mathematics in the elucidation of the fundamental laws of nature.

Various discussions

I was taught at school that one should not talk unless one has something to say.

Anecdote/Interview

The physicist's aim is to find the laws of nature, and the mathematician's aim is to find the laws of mathematics. But the two are very closely related.

Interview

God is a mathematician of a very high order, and He used very advanced mathematics in constructing the universe.

Interview/Anecdote

I do not see how a man can work on the frontiers of physics and not be religious.

Interview/Anecdote

The electron is a rather simple particle, and it is governed by a rather simple equation.

Lecture

The question of the existence of magnetic monopoles is one of the most fundamental unsolved problems in physics.

Lecture

One must keep an open mind and be prepared to accept new ideas, however strange they may seem at first.

Interview

The object of science is to make the world understandable.

Lecture