“All [knowledge] comes from experience, it is true, but experience is nothing if it does not form collections of similar facts. Now, to make collections is to count.”

— Pierre Charles Alexandre Louis

Letter to Jean Cruveilhier (1837), as quoted by William Coleman, Death is a Social Disease: Public Health and Political Economy in Early Industrial France (1982)

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Pierre Charles Alexandre Louis6

French physician 1787–1872

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“All [knowledge] comes from experience, it is true, but experience is nothing if it does not form collections of similar facts. Now, to make collections is to count.”

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Pierre Charles Alexandre Louis6

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