Science sees the process of evolution from the outside, as one might a train of cars going by, and resolves it into the physical and mechanical elements, without getting any nearer the reason of its going by, or the point of its departure or destination.

Nature teaches more than she preaches. There are no sermons in stones. It is easier to get a spark out of a stone than a moral.

Somewhat by historical happenstance the five permanent members of the UN Security Council - United States, Britain, France, Russia, and China - also were the original five countries to have nuclear weapons.

All sounds are sharper in winter; the air transmits better. At night I hear more distinctly the steady roar of the North Mountain. In summer it is a sort of complacent purr, as the breezes stroke down its sides; but in winter always the same low, sullen growl.

The Kingdom of Heaven is not a place, but a state of mind.

The smallest deed is better than the greatest intention.

The overall quantity of nuclear weapons in the world continues to decline slowly.