None of us feels the true love of God till we realize how wicked we are. But you can't teach people that -- they have to learn by experience.

"Paradoxical as it may seem, to believe in youth is to look backward; to look forward we must believe in age."

"While time lasts there will always be a future, and that future will hold both good and evil, since the world is made to that mingled pattern."

A human being must have occupation if he or she is not to become a nuisance to the world.

"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."