人类行为的首要原则是，一个人会做他认为能满足自己欲望的事情。

我认为在生活中保持平衡很重要。你不能一直工作；你也必须玩得开心。

The value of a commodity, or the quantity of any other commodity for which it will exchange, depends on the relative quantity of labor which is necessary for its production, and not on the greater or less compensation which is paid for that labor.

I didn't just jump back on the bike and win. There were a lot of ups and downs, good days and bad days.