Quantum

Although he agreed it worked perfectly

I can't accept quantum mechanics because,

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

Albert Einstein

"In the beginning there were only probabilities. The universe could only come into existence if someone observed it. It does not matter that the observers turned up several billion years later. The universe exists because we are aware of it."

Martin Rees

"[T]he atoms or elementary particles themselves are not real; they form a world of potentialities or possibilities rather than one of things or facts."

"Whether we electrons, light quanta, benzol molecules, or stones, we shall always come up against these two characteristics, the corpuscular and the undular." (Emphasis added.)

Werner Heisenberg

"Anyone not shocked by quantum mechanics has not yet understood it."

"Observations not only disturb what is to be measured, they produce it."

Pascual Jordan

"Nobody understands quantum mechanics."

Richard 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 the fore again. It was not possible to formulate the laws of quantum mechanics in a fully consistent way without reference to the consciousness."

Eugene Wigner

"The doctrine that the world is made up of objects whose existence is independent of human consciousness turns out to be in conflict with quantum mechanics and with facts established by experiment."

Bernard d'Espagnat

"Is it not good to know what follows from what, even if it is not necessary FAPP? [FAPP is Bell's disparaging abbreviation of "for all practical purposes."] Suppose for example that quantum mechanics were found to resist precise formulation. Suppose that when formulation beyond FAPP is attempted, we find an unmovable finger obstinately pointing outside the subject, to the mind of the observer, to the Hindu scriptures, to God, or even only Gravitation? Would that not be very, very interesting?"

John Bell

Niels Bohr