The happiest man I know is more intelligent than anybody on HN, a wild violinist you'll see playing wild roma, turkish, and arabic standing on top of newspaper boxes in north beach and the mission, when he's not traveling abroad. A genius with perfect pitch who memorizes books and speaks 10 languages.
He decided in University he would be happier without anything, and has been homeless since he was 16. He makes about $40 per day busking, and gives half of it to people less fortunate than himself. say hi to him if you see him.
