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那些疯狂到认为自己能改变世界的人,才能真正改变世界。
If you enter this world knowing you are loved and you leave this world knowing the same, then everything that happens in between can be dealt with.
Mathematics is the key to unlocking the secrets of the universe and understanding the fundamental laws that govern it.
"The moment you doubt whether you can fly, you cease for ever to be able to do it."