Most successes are unhappy. That's why they are successes - they have to reassure themselves about themselves by achieving something that the world will notice.
Too much mercy... often resulted in further crimes which were fatal to innocent victims who need not have been victims if justice had been put first and mercy second.
Crime is terribly revealing. Try and vary your methods as you will, your tastes, your habits, your attitude of mind, and your soul is revealed by your actions.
I specialize in murders of quiet, domestic interest.
Evil is not something superhuman, it's something less than human.
There is nothing more thrilling in this world, I think, than having a child that is yours, and yet is mysteriously a stranger.