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)

Philosophy and physics intertwine.

Atomics for Peace 1958

Open minds lead to open societies.

Reflection

Knowledge without application is futile.

Lecture

The double-slit experiment demonstrates wave nature.

Discussion 1920

The heart has its reasons which reason knows nothing of.

Quote adaptation

Bohr's comeback to Pauli: 'Your theory is so crazy it just might work.'

Conversation 1930

The stability of matter rests on quantum rules.

Nobel 1922

Seek truth in the shadows of doubt.

Aphorism

The atom's power must be harnessed for good.

Post-war letter 1945

Excellence is not a destination, but a road.

Advice

Quantum field theory extends the principles.

Reflection 1940

Friendship is the source of greatest joy.

Personal

The coat of arms motto: Opposites are complementary.

Honor 1947

Scientific truth is universal and timeless.

Speech

Laughter is the sun that drives winter from the human face.

Anecdote

The energy levels form a ladder to the nucleus.

Model 1913

Wisdom is the art of knowing what to overlook.

Aphorism

Peace through science is possible.

Conference 1955

The symphony of physics is mathematical.

Metaphor

Life rewards the brave.

Reflection