For virtue's self may too much zeal be had; the worst of madmen is a saint run mad.

Summary

This quote suggests that even virtues, when taken to an extreme, can become a source of destructive behavior. The quote argues that someone who is overly passionate or zealous about their virtues, to the point of obsession, can be just as dangerous and irrational as a madman. It implies that moderation and balance are key in cultivating virtues, rather than indulging in an excessive and fanatical approach that can lead to harmful outcomes.

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