Alan Turing — "We are all stardust."

"If you cannot explain it simply, you do not understand it well enough."

"I propose to consider the question, 'Can machines think?' This should begin with definitions of the meaning of the terms 'machine' and 'think.'"

"The main problem with artificial intelligence is that it is too easy to make a machine that can do what we want it to do, but too hard to make a machine that can do what we don't want it to do."

"I've now got myself into the kind of trouble that I have always considered to be quite a possibility for me, though I have usually rated it at about 10:1 against."

"The machine should be able to make mistakes."