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All earthly existence must ultimately be contained in a book.

我不后悔做過的事，只后悔沒做的事。

It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.

The best way to predict the future is to create it.

Nature is the best teacher; it has already done the experiments, we just have to interpret them.