The miraculous is not extraordinary but the common mode of existence. It is our daily bread. Whoever really has considered the lilies of the field or the birds of the air and pondered the improbability of their existence in this warm world within the cold and empty stellar distances will hardly balk at the turning of water into wine which was, after all, a very small miracle. We forget the greater and still continuing miracle by which water (with soil and sunlight) is turned into grapes.

There are two laws that we had better take to be absolute. The first is that as we cannot exempt ourselves from living in this world, then if we wish to live, we cannot exempt ourselves from using the world. If we cannot exempt ourselves from use, then we must deal with the issues raised by use. And so the second law is that if we want to continue living, we cannot exempt use from care.

History leaves no doubt that among of the most regrettable crimes committed by human beings have been committed by those human beings who thought of themselves as civilized. What, we must ask, does our civilization possess that is worth defending? One thing worth defending, I suggest, is the imperative to imagine the lives of beings who are not ourselves and are not like ourselves: animals, plants, gods, spirits, people of other countries, other races, people of the other sex, places and enemies.

Explanation changes whatever is explained into something explainable.

Laugh. Laughter is immeasurable. Be joyful though you have considered all the facts.

The more artificial a human environment becomes, the more the word ‘natural’ becomes a term of value.

A liberal education rests on the assumption that nature and human nature do not change very much or very fast and that one therefore needs to understand the past.