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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.

世界如此美好又遺憾，你我皆是自遠方而來的獨行者，不斷行走，不顧一切，哭著，笑著，留戀人間，只為不虛此行。