The truth is not always what we want to hear, but it is what we need to know.

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 typewriting machine, when played with expression, is not more annoying than the piano when played by a sister or near relations.

积极心理学不仅仅是感觉良好，而是关于美好的生活。