In your opinion ,Who is the most effective and important person in history ?Why?

Well... I guess it would be my neighbor down the street, Bob. He's a telepathic prophet, influencing lives around the world through subconscious manipulations. He's probably right about his claim to being the most effective and important person in history, but nobody else is likely to recognize his contributions until long after he's dead. You see... that little voice in your head isn't God, nor your conscience, it's just Bob... playing with you.