It Is Quite A Three-pipe Problem.

I Consider That A Man's Brain Originally Is Like A Little Empty Attic, And You Have To Stock It With Such Furniture As You Choose.

Any Truth Is Better Than Indefinite Doubt.

They Say That Genius Is An Infinite Capacity For Taking Pains," He Remarked With A Smile. "it's A Very Bad Definition, But It Does Apply To Detective Work.

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

Have You Tried To Drive A Harpoon Through A Body? No? Tut, Tut, My Dear Sir, You Must Really Pay Attention To These Details.