The world is a stage, but the play is badly cast.

进化是世界上最美丽的事情。

I never want to look back and say I could have done more.

On motivation: "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."

The uniform， constant， and uninterrupted effort of every man to better his condition， the principle from which public and national as well as private opulence is originally derived.

人类理解的职责是明白有些事情是它无法理解的。