Thoughts on quantum theory by various scientists:

"On quantum theory, I use up more braingrease than on relativity."

Albert Einstein to Otto Stern in 1911

"Those are the crazy people who are notworking on quantum theory."

Albert Einstein referring to the inmates of an insane asylum near his office in Prague, in 1911

"I could probably have arrived at somethinglike this myself, but if all this is true then itmeans the end of physics."

Albert Einstein, referring to a 1913 breakthrough by Niels Bohr

"Anyone who is not shocked by quantumtheory has not understood a single word."

Niels Bohr

"I don't like it, and I'm sorry I ever hadanything to do with it."

Erwin SchrÃ¶dinger about the probability interpretationof quantum mechanics