The first thing a principle does is kill somebody

Every time a man expects, as he says, his money to work for him, he is expecting other people to work for him.

The English language has a deceptive air of simplicity; so have some little frocks; but they are both not the kind of thing you can run up in half an hour with a machine.

If it were not for the war, this war would suit me down to the ground.

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.

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