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For since the fabric of the universe is most perfect and the work of a most wise Creator, nothing at all takes place in the universe in which some rule of maximum or minimum does not appear.

因为宇宙的结构是最完美的，也是最聪明的造物主的杰作，所以在宇宙中没有任何事情是不存在某种最大值或最小值的规则的。

— Leonhard Euler 莱昂哈德·欧拉