I often say that when you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind.
Fourier is a mathematical poem.
Mathematics is the only good metaphysics.
When you can measure what you are speaking about, and express it in numbers, you know something about it.
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