Every man finds his limitations, Mr. Holmes, but at least it cures us of the weakness of self-satisfaction.

Depend upon it, there is nothing so unnatural as the commonplace.

It is of the highest importance in the art of detection to be able to recognise out of a number of facts which are incidental and which are vital.

Am dining at Goldini's Restaurant, Gloucester Road, Kensington. Please come at once and join me there. Bring with you a jemmy, a dark lantern, a chisel, and a revolver. S. H." It was a nice equipment for a respectable citizen to carry through the dim, fog-draped streets.

To let the brain work without sufficient material is like racing an engine. It racks itself to pieces.

A man should keep his little brain attic stocked with all the furniture that he is likely to use, and the rest he can put away in the lumber-room of his library, where he can get it if he wants it.

My sister and I, you will recollect, were twins, and you know how subtle are the links which bind two souls which are so closely allied.