'The Lord of the Rings and Philosophy'

[Arwen1858]

I can't rule out your hypothetically immoral but perfectly happy and at peace person, but I've never met him or her.

I think it would be very hard for an immoral person to be happy. In his heart, that person would know what he was doing was wrong, and while he might try to ignore his conscience, and his heart may harden, to where he isn't as bothered by doing whatever immoral act he's in, he still wouldn't be truly happy. If someone, through immoral methods, gained a large amount of money, he could try as much as he wanted to fill his desires with material things. He could buy the biggest house, the best car, and the most expensive clothes, but those would not satisfy him. If he got the money through ill methods, he wouldn't be truly happy with it, even if he tried to act as if he were.