My mind rebels at stagnation. Give me problems, give me work, give me the most abstruse cryptogram, or the most intricate analysis, and I am in my own proper atmosphere. But I abhor the dull routine of existence. I crave for mental exaltation.

I have frequently gained my first real insight into the character of parents by studying their children.

The best way of successfully acting a part is to be it.

It's a wicked world, and when a clever man turns his brain to crime it is the worst of all.

To his eyes all seemed beautiful, but to me a tinge of melancholy lay upon the countryside, which bore so clearly the mark of the waning year, Yellow leaves carpeted the lanes and fluttered down upon us as we passed, The rattle of our wheels died away as we drove through drifts of rotting vegetation--sad gifts, as it seemed to me, for Nature to throw before the carriage of the returning heir of the Baskervilles.

The more featureless and commonplace a crime is, the more difficult it is to bring it home.

Work is the best antidote to sorrow, my dear Watson.