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I admonish you not to reject the method of experiment, but according as your power permits, to follow it without prejudice. For every experiment is like a weapon which must be used according to its peculiar power, as a spear to thrust, a club to strike, so also is it with experiments.

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Source and credibility

Wikiquote does not flag this quote as disputed or misattributed.

Source: (in Jaffe, Bernard. Crucibles: The Story of Chemistry. 4th Edition. New York: Dover, 1976. (Originally, 1930) | Pgs. 13-24)
Source quality: Source identified Names the work or year, but without an exact location.

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Topics

Science

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All things are poison and nothing is without poison; only the dose makes a thing not a poison.

The physician's duty is to heal the sick, not enrich the apothecaries.

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The art of healing comes from nature, not from the physician. Therefore the physician must start from nature, with an open mind.

Luther is abundantly learned, therefore you hate him and me, but we are at least a match for you.

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Attribution

Quote text and notes from Wikiquote: Paracelsus (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.