每种心理状态都有其存在的目的；要理解它，我们必须询问它在更广泛的行为系统中发挥什么功能。

最大的失败是放弃，最大的敌人是自己，最大的对手是时间。

I strongly believe that missionaries make better products. They care more. For a missionary, it's not just about the business. There has to be a business, and the business has to make sense, but that's not why you do it. You do it because you have something meaningful that motivates you.

Every performance is a new challenge.

最好带着某种激情的全部荣耀勇敢地进入另一个世界，而不是随着年龄的增长凄凉地褪色和枯萎。