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)

Science passage: The Fermi-Dirac statistics for fermions.

Paper with Fermi 1926

Interview: On climate, physics can model it.

Late interview 1980

Life quote: Family is the foundation.

Reflection 1960

Witty remark: I calculate, therefore I am.

Paraphrase 1950

Philosophy: The laws are simple, the applications complex.

Paper 1929

Wisdom: Collaborate but think independently.

Advice 1940

Art: Physics is the most beautiful of the arts.

Interview 1963

Politics: Education in science for all nations.

UNESCO speech 1955

Science: Quantum gravity remains the holy grail.

Lecture 1970

Life: Contentment in a life of discovery.

Final days 1984

Professional: The Dirac medal honors theoretical physics.

Posthumous 1985

Aphorism: Beauty endures, ugliness fades.

Nobel lecture 1933

Humor: Dirac's autobiography is shorter than his equations.

Attributed

Wisdom: The greatest discoveries are unexpected.

Interview 1965

Reflection: I leave behind a world more understood.

Deathbed 1984

Science: The search for a theory of everything continues.

Final comment 1980

It seems that if one is working from the point of view of getting beauty in one's equations, and if one has really a sound insight, one is on a sure line of progress.

The Evolution of the Physicist's Picture of Nature 1939

A physical theory must be of a type that can be expressed mathematically.

The Principles of Quantum Mechanics 1930

The most powerful method of advance that can be used is to employ all the resources of pure mathematics in the elucidation of the problem and then to try to interpret the mathematical results in terms of physics.

The Principles of Quantum Mechanics 1930

The world is a four-dimensional continuum, and it is only because our consciousness is of a three-dimensional nature that we have the idea of time flowing.

Attributed