One of the most fearful things about sin is its power to harden the one who practices it. The deeper a man goes in sin, the less sin bothers him. . . . Every sinner finds himself now committing sins that he once despised, and the sins that he now despises, he will someday find himself committing. It should shock us to remember that Adolph Hitler was once a little boy playing with toys just like other little boys. Man knows the beginning of sin, but no man has ever known the end of sin.
– Charles Leiter