"I learned more from my professors in one year than I have from all the books I've read."

"The whole development of science is nothing but a continuous struggle to escape from the magic of the senses."

"I consider the consciousness as fundamental. I consider matter as derivative from consciousness. We cannot get behind consciousness. Everything that we talk about, everything that we regard as existin…"

"There can be no such thing as a 'pure' science, as science is always influenced by the human mind."

"The quantum of action, as I called it, was a purely formal assumption and I really did not think much about it."