Robert Greene (born May 14, 1959) is an American author of books on strategy, power, and seduction. He has written six international bestsellers, including The 48 Laws of Power, The Art of Seduction, The 33 Strategies of War, The 50th Law (with rapper 50 Cent), Mastery, and The Laws of Human Nature. Greene says that he does not try to follow all of his advice as, "Anybody who did would be a horrible ugly person to be around."