The war has jerked us pretty sharply into consciousness about this slug-a-bed sin of Sloth, and perhaps we need not say too much about it. But two warnings are rather necessary.

The only ethical principle which has made science possible is that the truth shall be told all the time. If we do not penalize false statements made in error, we open up the way for false statements by intention. And a false statement of fact, made deliberately, is the most serious crime a scientist can commit.

It is fatal to let people suppose that Christianity is only a mode of feeling; it is vitally necessary to insist that it is first and foremost a rational explanation of the universe.

Nothing is more cruel to the young than to tell them that the world is made for youth.

A continual atmosphere of hectic passion is very trying if you haven't got any of your own.

A woman fit to be a man's wife is too good to be his servant.

Birth is beastly - and death - and digestion, if it comes to that. Sometimes when I think of what's happening inside me to a beautiful suprème de sole, with the caviare in boats, and the croûtons and the jolly little twists of potato and all the gadgets - I could cry. But there it is, don't you know.