What can be added to the happiness of a man who is in health, out of debt, and has a clear conscience?

What can be added to the happiness of a man who is in health, out of debt, and has a clear conscience?

一个健康、无债一身轻、问心无愧的人，还有什么能增加他的幸福呢?

-- Adam Smith 亚当·史密斯