Alan Turing

We can only see a short distance ahead, but we can see plenty there that needs to be done.

A computer would deserve to be called intelligent if it could deceive a human into believing that it was human.

Can machines think?

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.

Science is a differential equation. Religion is a boundary condition.

Those who can imagine anything, can create the impossible.

Sometimes it is the people no one can imagine anything of who do the things no one can imagine.

I am not very impressed with theological arguments whatever they may be used to support. Such arguments have had little success in converting people to Christianity in the past, and today they are quite hopeless.

The whole point of a computer is that it can do things faster than we can do them ourselves.

If a machine is expected to be infallible, it cannot also be intelligent.

Machines take me by surprise with great frequency.

I believe that at the end of the century the use of words and general educated opinion will have altered so much that one will be able to speak of machines thinking without expecting to be contradicted.

No engineer can make a machine to take the place of a man.

Mathematical reasoning may be regarded rather schematically as the exercise of a combination of two facilities, which we may call intuition and ingenuity.

The Enigma machine was a very clever device.

I want to do something really worthwhile.

It is rather a shock to find that the laws of nature are written in this peculiar language of the mathematician.

One of the main functions of a computer is to do what you can't do easily yourself.

The human brain is a wonderful organ. It starts working as soon as we are born and continues working until the moment we stand up to make a speech.

There is no reason why an extra-logical picture of the world need not be true.