"

Jealousy is bred in doubts. When those doubts change into certainties, then the passion either ceases or turns absolute madness.

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Jealousy lives upon doubts. It becomes madness or ceases entirely as soon as we pass from doubt to certainty.

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Passion makes idiots of the cleverest men, and makes the biggest idiots clever.

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Passion often makes fools of the wisest men and gives the silliest wisdom.