Alan Turing — "The idea of a 'thinking machine' is not something that should be taken lightly."

"The machine should be able to communicate with human beings."

"The game of cricket is one such example of a game which can be played against the computer."

"The human mind is a very complicated machine."

"One could say that a man can 'inject' an idea into the machine, and that it will respond to a certain extent and then drop into quiescence, like a piano string struck by a hammer. Another simile would…"

"The idea behind digital computers may be explained by saying that these machines are intended to carry out any operations which could be done by a human computer."