Niels Bohr

Physics Danish 1885 – 1962 768 quotes

Pioneer of quantum theory and atomic structure

Most quoted

"The fact that religions through the ages have spoken in images, parables, and paradoxes means simply that there are no other ways of grasping the reality to which they refer. But that does not mean that it is not a genuine reality. And complementarity, by the way, is not a new invention of mine. It is, in fact, as old as language itself. We have to be clear that when it comes to atoms, language can be used only as poetry. The poet, too, is not nearly so concerned with describing facts as with creating images and establishing connections."

— from Interview with Aage Petersen

"The fact that religions through the ages have spoken in images, parables, and paradoxes means simply that there are no other ways of grasping the reality to which they refer. But that does not mean that it is not a genuine reality. And the fact that this reality is not accessible to us in the same way as material reality makes it no less real."

— from Attributed

"The very nature of the quantum theory thus forces us to regard the space-time co-ordination and the claim of causality, the union of which characterizes the classical theories, as complementary but exclusive features of the description, symbolizing the idealization of observation and definition respectively."

— from Atomic Theory and the Description of Nature, 1929

All quotes by Niels Bohr (768)

Bohr's witty remark on his coat of arms: 'Contraria sunt complementa.'

Personal 1947

Atomic physics reveals the subtlety of nature.

Nobel speech 1922

Truth is stranger than fiction in quantum realms.

Interview

Science for peace, not war.

Memorandum 1944

The greatest glory is in rising every time we fall.

Aphorism

Entangled particles share fates across distances.

Discussion 1935

Life is too important to be taken seriously.

Anecdote

The Bohr institute is a beacon of knowledge.

Anniversary speech 1960

Wisdom is perishable, but knowledge endures.

Reflection

International atomic control is imperative.

Conference 1946

Harmony in science mirrors harmony in art.

Essay

A smile is the universal welcome.

Personal note

The spectral lines confirm the model.

Publication 1913

Question everything, especially your own beliefs.

Advice

The quantum world is counterintuitive yet real.

Lecture 1927

In unity, there is strength for humanity.

Speech 1950

The dance of electrons is poetic.

Metaphor

Humor is reason's safety valve.

Aphorism

The radius of the electron orbit is quantized.

Calculation 1913

The essence of life is growth.

Letter