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6. Mathematics / A. Nature of Mathematics / 2. Geometry
10245
One geometry cannot be more true than another
[Poincaré]
6. Mathematics / C. Sources of Mathematics / 6. Logicism / a. Early logicism
8628
I hold that algebra and number are developments of logic
[Jevons]
15. Nature of Minds / A. Nature of Mind / 2. Psuche
5880
Xenocrates held that the soul had no form or substance, but was number
[Xenocrates, by Cicero]