[Children] are taught that it is a virtue to accept statements without adequate evidence, which leaves them a prey to quacks of every kind in later life, and makes it very difficult for them to accept the methods of thought which are successful in science.

There is no great invention, from fire to flying, which has not been hailed as an insult to some god.

In fact, words are well adapted for description and the arousing of emotion, but for many kinds of precise thought other symbols are much better.

My final word, before I'm done, Is "Cancer can be rather fun"- Provided one confronts the tumour with a sufficient sense of humour. I know that cancer often kills, But so do cars and sleeping pills; And it can hurt till one sweats, So can bad teeth and unpaid debts. A spot of laughter, I am sure, Often accelerates one's cure; So let us patients do our bit To help the surgeons make us fit.

Man armed with science is like a baby with a box of matches.

If human beings could be propagated by cutting, like apple trees, aristocracy would be biologically sound.

I do not believe in the commercial possibility of induced radioactivity.