As a military man who has given half a century of active service I say in all sincerity that the nuclear arms race has no military purpose. Wars cannot be fought with nuclear weapons. Their existence only adds to our perils because of the illusions they have generated. There are powerful voices around the world who still give credence to the old Roman precept - if you desire peace, prepare for war. This is absolute nuclear nonsense.

I can't think of a more wonderful thanksgiving for the life I've had than that everyone should be jolly at my funeral.

You can divide my life into two.

Never feel that a piece of criticism or advice is too much trouble to give, or that it exceeds your province.

What do you do if you are asked to do a job, first by the Prime Minister, and then by the King? How can you refuse?

In 1966 I became president of the British Computer Society.

It is a curious thing, but I have been right in everything I have done and said in my life.