We are much too much inclined in these days to divide people into permanent categories, forgetting that a category only exists for its special purpose and must be forgotten as soon as that purpose is served.

Some people's blameless lives are to blame for a good deal.

To know one's own limitations is the hallmark of competence.

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

Have you noticed that the astronomers and mathematicians are much the most cheerful people of the lot? I suppose that perpetually contemplating things on so vast a scale makes them feel either that it doesn't matter a hoot anyway, or that anything so large and elaborate must have some sense in it somewhere.

[Did you] ever know a sincere emotion to express itself in a subordinate clause?

Once lay down the rule that the job comes first and you throw that job open to every individual, man or woman, fat or thin, tall or short, ugly or beautiful, who is able to do that job better than the rest of the world.