If you have never done anything evil, you should not be worrying about devils knocking at your door.
ChineseThe more cashless our society becomes, the more our moral compass slips.
The Honest Truth About Dishonesty: How We Lie to Everyone--Especially OurselvesNature has gone to great lengths to hide our subconscious from ourselves. Why?
The Moral Animal: Why We Are the Way We Are: The New Science of Evolutionary Psychology