Gratitude unlocks the fullness of life. It turns what we have into enough, and more. It turns denial into acceptance, chaos to order, confusion to clarity. It can turn a meal into a feast, a house into a home, a stranger into a friend.

Our customers are the foundation of our business, and their success is our success.

只看到别人的一切坏处，是恶的根源；能明察自己的一切缺失，才是所有善的根本。

In things indifferent， nothing is preferable to anything else.

The definition of a good mathematical problem is the mathematics it generates rather than the problem itself.

History is not just about facts, but about the shadows between them.