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Charles Caleb Colton: He that is warned by all the folly of others, has attained the soundest wisdom.

He that is warned by all the folly of others, has attained the soundest wisdom.
Charles Caleb ColtonCommonly attributed
Source
From the book Quoted in Cassell's Book of Quotations, Proverbs and Household Words, compiled by W. Gurney Benham, 1914

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