"As the several items can be exchanged, they must be equal; but in what terms? Not in pounds, yards, or hours; they are equal in value. Then what is wa...

Newton was asked as a mathematician, not as a moralist. He replied 'Gentlemen, in applied mathematics, you must describe your unit.
Newton was asked as a mathematician, not as a moralist. He replied 'Gentlemen, in applied mathematic...
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