"Detection is, or ought to be, an exact science and should be treated in the same cold and unemotional manner."

"It has long been an axiom of mine that the little things are infinitely the most important."

"The highest and most complex achievement of the human intellect is the power of generalization."

"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."

"The love of books is among the choicest gifts of the gods."