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The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

Mathematics is the music of reason.

I don't think about being the best, I think about progressing and enjoying what I do.

人的救贖需要三樣東西：知道他應該相信什么，知道他應該渴望什么，知道他應該做什么。