信任的人不忠诚，忠诚的人不信任。 

He had a way of looking at her that made her feel like the only person in the room.

Efficiency is doing things right; effectiveness is doing the right things.

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

最大的智慧是认识自己。

我相信一切皆有因。人们改变是为了让你学会放手，事情出错是为了让你在它们正确时懂得珍惜。

计算复杂性理论的发展向我们展示了并非所有问题都是平等的。