I recall the story of the philosopher and the theologian... The two were engaged in disputation and the theologian used the old quip about a philosopher resembling a blind man, in a dark room, looking for a black cat – which wasn’t there. ‘That may be,’ said the philosopher, ’but a theologian would have found it.

How unfortunate for mankind that the Lord is reported by Holy Writ as having said ‘Vengeance is mine!’

Applied physics and chemistry bring more grist to the mill; applied biology will also be capable of changing the mill itself.

Human potentialities constitute the world’s greatest resource...

If I am to be remembered, I hope it will not be primarily for my specialized scientific work, but as a generalist; one to whom, enlarging Terence’s words, nothing human and nothing in external nature was alien.

The sense of spiritual relief which comes from rejecting the idea of God as a supernatural being is enormous.

Sir Julian Huxley, one of the world's leading evolutionists, head of UNESCO, descendant of Thomas Huxley - Darwin's bulldog - said on a talk show, 'I suppose the reason we leaped at The Origin of Species was because the idea of God interfered with our sexual mores.'.

It is essential for evolution to become the central core of any educational system, because it is evolution, in the broad sense, that links inorganic nature with life, and the stars with the earth, and matter with mind, and animals with man. Human history is a continuation of biological evolution in a different form.

The human race will be the cancer of the planet.

The lowest strata are reproducing too fast. Therefore... they must not have too easy access to relief or hospital treatment lest the removal of the last check on natural selection should make it too easy for children to be produced or to survive; long unemployment should be a ground for sterilisation.