I always say, decisions I make, I live with them. There’s always ways you can correct them or ways you can do them better. At the end of the day, I live with them.

The best time to plant a tree was 20 years ago. The second-best time is now.

The night is a great poem, but the stars are its words.

The key to success is to focus on goals, not obstacles.

Leadership is about having the courage to make tough decisions and the humility to learn from mistakes.

预测未来的最好方式就是创造未来。

在所有时代，困扰人类并给他们带来最大灾难的大问题，不是世界上是否有权力，也不是权力从何而来，而是谁应该拥有它。

In the end, that's what this election is about. Do we participate in a politics of cynicism or a politics of hope?

物理学的美丽在于它能够揭示宇宙表面复杂性之下的深刻简单性。

有用是这些老人曾经对自己最好的希望，而无目的是他们最深的恐惧。