Alan Turing — "I am not a believer in the idea that the human mind is something supernatural."

"The original question, 'Can machines think?' I believe to be too meaningless to deserve discussion."

"The most beautiful thing we can experience is the mysterious."

"I am not concerned with whether a machine has feelings, but whether it can perform tasks that require intelligence."

"The true nature of intelligence is not to be found in the ability to solve problems, but in the ability to ask the right questions."

"A smallish proportion are supercritical. An idea presented to such a mind may give rise to a whole 'theory' consisting of secondary, tertiary and more remote ideas. Animals' minds seem to be very defi…"