"The essence of mathematics lies in its freedom."

伟大的领导者倾听多于发言，行动多于计划。

Strength doesn't come from what you can do. It comes from overcoming the things you once thought you couldn't.

文学是问题减去答案。

The more you praise and celebrate your life, the more there is in life to celebrate.

每当一座煤电厂关闭，美国的一部分心脏也随之关闭。