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This is similar to our "every cloud has a silver lining." The English version is more optimistic; it is also, literally and figuratively, less true- plenty of clouds (and negative events) have no silver lining. Closer to the Italian is the old-fashioned saying "it's an ill wind that blows no good." The idea is also expressed by the phrase "blessing in disguise."
The Eggplant has always been opposed to undue optimism, from which its fellow Americans often suffer. However, one can also go overboard with the pessimism.