Dogs Don't Make Mistakes.

Sherlock Holmes Took His Bottle From The Corner Of The Mantel-piece, And His Hypodermic Syringe From Its Neat Morocco Case. With His Long, White, Nervous Fingers He Adjusted The Delicate Needle, And Rolled Back His Left Shirt-cuff. For Some Little Time His Eyes Rested Thoughtfully Upon The Sinewy Forearm And Wrist, All Dotted And Scarred With Innumerable Puncture-marks. Finally, He Thrust The Sharp Point Home, Pressed Down The Tiny Piston, And Sank Back Into The Velvet-lined Armchair With A Long Sigh Of Satisfaction.

...while The Individual Man Is An Insoluble Puzzle, In The Aggregate He Becomes A Mathematical Certainty.

No Man Lives Or Has Ever Lived Who Has Brought The Same Amount Of Study And Of Natural Talent To The Detection Of Crime Which I Have Done.

It Is Hardly Fair To Blame America For The State Of San Francisco, For Its Population Is Cosmopolitan And Its Seaport Attracts The Floating Vice Of The Pacific; But Be The Cause What It May, There Is Much Room For Spiritual Betterment.

And Yet The Motives Of Women Are So Inscrutable. You Remember The Woman At Margate Whom I Suspected For The Same Reason. No Powder On Her Nose - That Proved To Be The Correct Solution. How Can You Build On Such A Quicksand? Their Most Trivial Action May Mean Volumes, Or Their Most Extraordinary Conduct May Depend Upon A Hairpin Or A Curling Tongs.