Quantum Quotes

If you’re finding quantum theory hard to swallow, you’re not alone. Here’s what some of the best quantum thinkers had to say about this strange but fascinating area of physics.

Those who are not shocked when they first come across quantum theory cannot possibly have understood it

Niels Bohr

Quantum mechanics makes absolutely no sense

Roger Penrose

The ‘paradox’ is only a conflict between reality and your feeling of what reality ‘ought to be’

Richard Feynman

I think I can safely say that nobody understands quantum mechanics

Richard Feynman

If you are not completely confused by quantum mechanics, you do not understand it

John Wheeler

Everything we call real is made of things that cannot be regarded as real

Niels Bohr

I do not like it, and I am sorry I ever had anything to do with it

Erwin Schrödinger

Photo Credits:

Niels Bohr
Photograph by A. B. Lagrelius and Westphal

Richard Feynman
Harvey of Pasadena, courtesy AIP Emilio Segre Visual Archives

Albert Einstein
Photograph by Ferdinand Schmutzer

John Wheeler
AIP Emilio Segre Visual Archives, Wheeler Collection

Erwin Schrödinger
Photograph by Francis Simon, courtesy AIP Emilio Segre Visual Archives