Can money and power ever make us happy? How much is enough? Our constant desire for more is part of our human nature. But is greed getting the better of us? “People like to have a lot of stuff because it gives them the feeling of living forever,” says American social psychologist Sheldon Solomon. He thinks we have to come to terms with our own mortality before we can break the cycle. Are there other ways to feel happy and content? Can we simply stop being greedy by changing the way we think?