Before turning to those moral and mental aspects of the matter which present the greatest difficulties, let the inquirer begin by mastering more elementary problems.

Everything comes in circles. [...] The old wheel turns, and the same spoke comes up. It's all been done before, and will be again.

To the man who loves art for its own sake, it is frequently in its least important and lowliest manifestations that the keenest pleasure is to be derived.

‎A change of work is the best rest.

It is stupidity rather than courage to refuse to recognize danger when it is close upon you.

A study of family portraits is enough to convert a man to the theory of reincarnation.

It is of the highest importance in the art of detection to be able to recognise out of a number of facts which are incidental and which are vital.