"I am not a connoisseur of crime; I am a student of it."

"The mysteries of the universe are endless."

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

"For strange effects and extraordinary combinations we must go to life itself, which is always far more daring than any effort of the imagination."

"Depend upon it there comes a time when for every addition of knowledge you forget something that you knew before. It is of the highest importance, therefore, not to have useless facts elbowing out the…"