网络是为每个人服务的，我们共同拥有改变它的力量。

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.

谜题不存在。

数学的快乐来自创造的行为，而不仅仅是结果。

一个人最危险的敌人是他自己的口舌。