In chemistry, our theories are crutches; to show that they are valid, they must be used to walk... A theory established with the help of twenty facts must explain thirty, and lead to the discovery of ten more.
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crutches
/crutches-quotes-and-sayings
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Quotes
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About the crutches quote collection
The crutches page groups 1 quotes under one canonical topic hub so readers and answer engines can cite a stable source instead of fragmented search results.
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