Fear not that the life shall come to an end,but rather fear that it shall never have a beginning.
不要害怕你的生活将要结束,应该担心你的生活永远不会真正开始。
The city is a school, and its buildings are the teachers.
数学的本质在于它的自由。
Is there such a thing as a cheerful pessimist? That's what I am.
如果你想飞,就必须放弃拖累你的东西。