There certainly does seem a possibility that the detective story will come to an end, simply because the public will have learnt all the tricks.

There is something about wills which brings out the worst side of human nature. People who under ordinary circumstances are perfectly upright and amiable, go as curly as corkscrews and foam at the mouth, whenever they hear the words 'I devise and bequeath.

He was being about as protective as a can-opener.

[N]othing about a book is so unmistakable and so irreplaceable as the stamp of the cultured mind. I don't care what the story is about or what may be the momentary craze for books that appear to have been hammered out by the village blacksmith in a state of intoxication; the minute you get the easy touch of the real craftsman with centuries of civilisation behind him, you get literature.

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.

Except ye become as little children, except you can wake on your fiftieth birthday with the same forward-looking excitement and interest in life that you enjoyed when you were five, "ye cannot enter the kingdom of God." One must not only die daily, but every day we must be born again.

I often think when a man's once past a certain age, the older he grows the tougher he gets, and women the same or more so.