The more success the quantum theory has, the sillier it…

If [quantum theory] is correct, it signifies the end of physics as a science.

— Albert Einstein

I like to think the moon is there even if I am not looking at it.

— Albert Einstein

You know how it always is, every new idea, it takes a generation or two until it becomes obvious that there's no real problem.…

— Richard P. Feynman

The treatment of the indeterminacy principle as absolute and final can then be criticized as constituting an arbitrary restriction on scientific theories, since it…

— David Bohm

“Quantum physics teaches us that we can simultaneously exist in many places, under certain conditions.”

— Amit Ray

Scientific realism in classical (i.e. pre-quantum) physics has remained compatible with the naive realism of everyday thinking on the whole; whereas it has proven…

— Ravi Gomatam

There was a time when the newspapers said that only twelve men understood the theory of relativity. I do not believe there ever was…

— Richard P. Feynman

When the province of physical theory was extended to encompass microscopic phenomena through the creation of quantum mechanics, the concept of consciousness came to…

— Eugene Wigner

When asked ... [about] an underlying quantum world, Bohr would answer, 'There is no quantum world. There is only an abstract quantum physical description.…

— Niels Bohr

“The quantum revolution is not the discovery of quantum physics. It is the transition from understanding quantum reality to engineering it.”

— Ludmila Morozova-Buss

“Another very good test some readers may want to look up, which we do not have space to describe here, is the Casimir effect,…

— Gordon L. Kane

“Quantum attention functions are the keys to quantum machine learning.”

— Amit Ray

“Heisenberg's uncertainty relation measures the amount by which the complementary descriptions of the electron, or other fundamental entities, overlap. Position is very much a…

— John Gribbin

Qualities I sought in a scientific theory were naturalness, inner perfection and logical simplicity from an aesthetic approach.

— Albert Einstein

Quantum mechanics is certainly imposing. But an inner voice tells me that this is not yet the real thing. The theory says a lot,…

— Albert Einstein