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Richard Kirwan

Richard Kirwan Biography

Scientist

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“Though words are arbitrary in their primitive institution, yet when once their signification is fixed, we are no more entitled to alter it than to call a tree an elephant; for, being no man's private possession, but the common measures of commerce and communication, it is not for any one at pleasure to change the stamp they are current in; at least where there is a necessity to do so, notice of it should be given.”

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Book:Logick; Or, an Essay On the Elements, Principles, and Different Modes of Reasoning, Volume 1
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“Geological facts being of an historical nature, all attempts to deduce a complete knowledge of them merely from their still, subsisting consequences, to the exclusion of unexceptionable testimony, must be deemed as absurd as that of deducing the history of ancient Rome solely from the medals or other monuments of antiquity it still exhibits, or the scattered ruins of its empire, to the exclusion of a Livy, a Sallust, or a Tacitus.”

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Book:Geological essays
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