"It is a capital mistake to theorize before one has data."

"There is nothing more stimulating than a case where everything goes against you."

"The very atmosphere of the room seemed to be impregnated with the spirit of crime."

"Ignorance is the curse of God; knowledge is the wing wherewith we fly to heaven."

"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."