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Humour is the only test of gravity, and gravity of humour, for a subject which will not bear raillery is suspicious, and a jest which will not bear serious examination is false wit.

幽默是对严肃的唯一检验，而严肃的幽默则是对严肃的唯一检验，因为不受嘲笑的主题是可疑的，不受严肃检验的笑话是虚假的机智。

— Aristotle 亚里士多德