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Ideas of Proclus, by Text

[Greek, 412 - 485, Born at Constantinople. Last Head of the Academy in Athens. Died in Athens.]

452 Commentary on Euclid's 'Elements'
p.282 The origin of geometry started in sensation, then moved to calculation, and then to reason
p.161-2 p.12 Geometrical proofs do not show causes, as when we prove a triangle contains two right angles