"...A strange enigma is man!"
"Someone calls him a soul concealed in an animal," I suggested.
"Winwood Reade is good upon the subject," said Holmes. "He remarked
that, while the individual man is an insoluble puzzle, in the aggregate he
becomes a mathematical certainty. You can, for example, never foretell what
any one man will do, but you can say with precision what an average number
will be up to. Individuals vary, but percentages remain constant. So says
- -- Sherlock Holmes, "The Sign of Four"