“There was so much to say that we said nothing.”

“Watch out for intellect,because it knows so much it knows nothingand leaves you hanging upside down,mouthing knowledge as your heartfalls out of your mouth.”

“How very paltry and limited the normal human intellect is, and how little lucidity there is in the human consciousness, may be judged from the fact that, despite the ephemeral brevity of human life...”

“Ideas are the source of all things”

“I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettie...”

“To know the history of science is to recognize the mortality of any claim to universal truth. ”

“The scientist only imposes two things, namely truth and sincerity, imposes them upon himself and upon other scientists.”

“We realized that among us, among all the races, we had a staggering fund of knowledge and of techniques - that working together, by putting together all this knowledge and capability, we could arri...”

“It seems to me, Golan, that the advance of civilization is nothing but an exercise in the limiting of privacy.”

“Science fiction at its best should be crazy and dangerous, not sane and safe.”