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)

The correspondence between classical and quantum.

Principle 1923

In the dance of atoms, beauty emerges.

Poetic reflection

A paradox is a pointer to deeper truth.

Philosophy

The future belongs to those who prepare for it today.

Speech

Quantum mechanics is incomplete without complementarity.

Kiel lecture 1928

The human spirit yearns for understanding.

Interview

Bohr's joke: 'Physics is like sex: sure, it may give some practical results, but that's not why we do it.'

Anecdote

The electron's orbit is not a classical path.

Theory 1913

Truth is the child of time.

Aphorism

Unity among nations prevents catastrophe.

Address 1948

The pursuit of truth requires courage.

Letter

The hydrogen spectrum is the Rosetta stone of atoms.

Work 1913

Happiness lies in the consciousness we have of it.

Reflection

The observer effect changes everything.

Debate 1927

Art captures the essence science describes.

Conversation

Wit is educated insolence.

Aphorism

The quantized angular momentum explains stability.

Postulate 1913

The meaning of life is in the living.

Personal

Philosophy provides the framework for science.

Essay 1954

Ethical science benefits all mankind.

Manifesto 1950