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 historian’s first duty is to the truth.

我相信创造的激情，相信梦想比现实更有力量。

我必须研究政治和战争、挂毯和瓷器。

人生就像骑单车。想保持平衡就得往前走。

自然法则支配着一切。