The optimist proclaims that we live in the best of all possible worlds; and the pessimist fears this is true.

The optimist proclaims that we live in the best of all possible worlds; and the pessimist fears this is true.

乐观主义者宣称我们生活在所有可能的世界中最好的世界里;悲观主义者担心这是真的。

-- James Branch Cabell 卡贝尔