There is no scent so pleasant to my nostrils as that faint, subtle reek which comes from an ancient book.

I have taken to living by my wits.

Was it hardness, was it selfishness, that she should ask me to risk my life for her own glorification? Such thoughts may come to middle age; but never to ardent three-and-twenty in the fever of his first love.

Hot hate is twin brother to hot love.

"I should have more faith," he said; "I ought to know by this time that when a fact appears opposed to a long train of deductions it invariably proves to be capable of bearing some other interpretation."

Dogs don't make mistakes.

[Sherlock Holmes:] The temptation to form premature theories upon insufficient data is the bane of our profession.