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Letters are the biographer's gold mine; they reveal what official records conceal.
"The beauty of science lies in its ability to transform the abstract into the tangible."
预测未来的最好方法就是创造未来。
Fearless is not the absence of fear. It's not being completely unafraid. It's having a lot of fears, but jumping anyway.
The key to building a successful business is to focus on creating value for your customers.
In mathematics, you don't understand things. You just get used to them.