Man is capable of greatness, love, nobility, compassion. Yet...

Man is capable of greatness, love, nobility, compassion. Yet never forget that his capacity for evil is infinite. It is a sad truth, boy, that if you sit now and think of the worst tortures that could ever be inflicted on another human being, they will already have been practiced somewhere. If there is one sound that follows the march of humanity, it is the scream.