"The most difficult crime to track is the one which is purposeless."

"The press, Watson, is a most valuable institution, if you only know how to use it."

"The ideal reasoner would, when he had once been shown a single fact in all its bearings, deduce from it not only all the chain of events which had preceded it but also all the ramifications which woul…"

"How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth?"

"Work is the best antidote to sorrow."