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

每个恶棍都是自己故事中的英雄。

我相信教育改变世界的力量。

The best mathematics is that which you do not understand at first glance.

我宁愿因为做真实的自己而被讨厌，也不愿因为伪装而被喜欢。