Hunger and poverty are the root causes of much of the world's unrest and misery.

"The challenge of biography isn't finding the facts - it's finding the meaning behind them."

每一天都是一个新的机会。

Every person you meet knows an amazing lot about something you know virtually nothing about. Your job is to discover what it is， and it won’t be obvious.

If it doesn't challenge you, it won't change you.

关于我的建筑，唯一困扰我的是它们还不够好。