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宇宙是一个相当大的地方。如果只有我们,那似乎是对空间的极大浪费。
The study of mathematics is like air or gravity—it is everywhere, and you can't see it, but you know it's there.
Success is not about how much money you make, it's about the difference you make in people's lives.
恐惧常常是我们最大不幸的根源。
学习任何事情的最好方法就是去做。