To save the world requires faith and courage: faith in reason, and courage to proclaim what reason shows to be true.

There are some simple maxims which I think might be commended to writers of expository prose. First: never use a long word if a short word will do. So, if you want to make a statement with a great many qualifications, put some of the qualifications in separate sentences. Third: do not let the beginning of your sentence lead the reader to an expectation which is contradicted by the end.

One of the painful things about our time is that those who feel certainty are stupid, and those with any imagination and understanding are filled with doubt and indecision.

Belief in God and a future life makes it possible to go through life with less of stoic courage than is needed by skeptics.

In any closet, you can find it, if it is too small, or out of style, or there is just one of it where there should be two

We have almost reached the point where praise of rationality is held to mark a man as an old fogey regrettably surviving from a bygone age.

In regard to the past, where contemplation is not obscured by desire and the need for action, we see, more clearly than in the lives about us, the value for good and evil, of the aims men have pursued and the means they have adopted. It is good, from time to time, to view the present as already past, and to examine what elements it contains that will add to the world's store of permanent possessions, that will live and give life when we and all our generation have perished.