Dmitri Mendeleev

No law of nature, however general, has been established all at once; its recognition has always been preceded by many presentiments.
No law of nature, however general, has been established all at once; its recognition has always been preceded by many presentiments.
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These are some quotes by Russian author Dmitri Mendeleev Scientist, who lived between February 8, 1834 and February 2, 1907.