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)

Pure mathematics is the poetry of logical ideas.

Attributed 1950

My work at Cambridge was productive.

Letter 1932

The uncertainty principle is fundamental.

Discussion with Heisenberg 1927

I value silence in thought.

Personal reflection 1960

Magnetic monopoles may exist.

Paper 1931

Education should emphasize mathematics.

Advice 1945

The atom's structure is governed by quantum rules.

Early paper 1925

I met Einstein in 1925; he was kind.

Autobiography 1977

Truth in science comes from mathematical elegance.

Lecture 1955

The neutrino was a hypothetical particle then.

Comment 1930

Happiness comes from discovering nature's secrets.

Reflection 1970

Relativity and quantum mechanics must unify.

Dirac equation paper 1928

I disliked small talk; preferred deep discussions.

Interview 1965

The fine structure constant is a mystery.

Lecture 1960

Poetry and physics both seek beauty.

Interview 1962

My father's insistence on languages helped me.

Autobiography 1977

The world is rational and mathematical.

Speech 1940

Beta decay involves neutrinos.

Theory 1934

I won the Nobel for predicting antimatter.

Speech 1933

Life's purpose is understanding the universe.

Late interview 1980