Better to write for yourself and have no public, than to write for the public and have no self.

There is no pain equal to that which two lovers can inflict on one another... It is when we begin to hurt those whom we love that the guilt with which we are born becomes intolerable, and since all those whom we love intensely and continuously grow part of us, and since we hate ourselves in them, so we torture ourselves and them together.

No education is worth having that does not teach the lesson of concentration on a task, however unattractive. These lessons, if not learnt early, will be learnt, if at all, with pain and grief in later life.

We fear something before we hate.

In youth the life of reason is not in itself sufficient; afterwards the life of emotion, except for short periods, becomes unbearable.

Literature is the art of writing something that will be read twice; journalism what will be grasped at once.

The detective story itself is in a dilemma. It is a vein which is in danger of being worked out, the demand is constant, the powers of supply variable, and the reader, with each one he absorbs, grows a little more sophisticated and harder to please, while the novelist, after each one he writes, becomes a little more exhausted.