It is a pity he did not write in pencil. As you have no doubt frequently observed, the impression usually goes through -- a fact which has dissolved many a happy marriage.

"I have seen those symptoms before," said Holmes, throwing his cigarette into the fire. "Oscillation upon the pavement always means an affaire de coeur."

I'm not a psychopath, I'm a fully functioning sociopath. Do your research.

It is, of course, a trifle, but there is nothing so important as trifles.

There is nothing like first-hand evidence.

Never trust to general impressions, my boy, but concentrate yourself upon details.

A fine thought in fine language is a most precious jewel, and should not be hid away, but be exposed for use and ornament.