He who does not contemplate the future is destined to be overwhelmed by it.

Non-violence is the policy of the vegetable kingdom.

Strength is the outcome of need; security sets a premium on feebleness. The work of ameliorating the conditions of life -- the true civilizing process that makes life more and more secure -- had gone steadily on to a climax... And the harvest was what I saw.

When the mind grapples with a great and intricate problem, it makes its advances step by step, with but little realization of the gains it has made, until suddenly, with an effect of abrupt illumination, it realizes its victory.

If Max [Aitken] gets to Heaven he won't last long. He will be chucked out for trying to pull off a merger between Heaven and Hell ... after having secured a controlling interest in key subsidiary companies in both places, of course.

Biologists can be just as sensitive to heresy as theologians.

Moral indignation is jealousy with a halo.