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The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.

Nothing is certain， and nothing is impossible.

都說女兒是媽媽的小棉襖，可我是我媽的貂。

寫作就是直面過去留下的幽靈。

Every tree tells a story; our job is to make sure it's a story of renewal, not destruction.