Alan Turing — "A human being is a machine for converting food into thoughts."

"The extent to which we regard something as a machine is a matter of degree."

"Instead of trying to produce a programme to simulate the adult mind, why not rather try to produce one which simulates the child's? If this were then subjected to an appropriate course of education on…"

"The question whether machines can think is as meaningless as the question whether submarines can swim."

"The true sign of intelligence is not knowledge but imagination."

"The original question, 'Can machines think?' I believe to be too meaningless to deserve discussion. Nevertheless I believe that at the end of the century the use of words and general educated opinion …"