Sweet are the uses of adversity,
Which, like the toad, ugly and venomous,
Wears yet a precious jewel in his head;
And this our life, exempt from public haunt,
Finds tongues in trees, books in the running brooks,
Sermons in stones, and good in everything.
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- Shakespeare, As You Like It

This is helpful to say to yourself in tough times, probably a bad idea to say to others.