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幸福很少缺席;是我们不知道它的存在。
Happiness is rarely absent; it is we that know not of its presence.
In mathematics, the journey is just as important as the destination; the process of discovery is where the real learning happens.
我们不会试图比市场更聪明;我们试图理解它。
Chemistry is not just about what you can make, but how you can make it.