Education never ends, Watson. It is a series of lessons, with the greatest for the last.

A client is to me a mere unit, a factor in a problem.

'There's no need for fiction in medicine,' remarks Foster... 'for the facts will always beat anything you fancy.'

Sir Walter, with his 61 years of life, although he never wrote a novel until he was over 40, had, fortunately for the world, a longer working career than most of his brethren.

When you have eliminated the impossible, what is left, no matter how unlikely, is the truth.

There seems to me to be absolutely no limit to the inanity and credulity of the human race. Homo Sapiens! Homo idioticus!

Detection is, or ought to be, an exact science, and should be treated in the same cold and unemotional manner. You have attempted to tinge it with romanticism, which produces much the same effect as if you worked a love-story or an elopement into the fifth proposition of Euclid.