Euclid

Mathematics does seem to evoke a feeling of timelessness and certainty. We may not formulate geometry exactly as Euclid did, but none of Euclid’s theorems is now considered false. The proofs given by Apollonius and Archimedes still work as proofs for us, and the theorems they prove are, we say, true, not just agreed upon or universally accepted. --Fernando Q. Gouvea, The Book of Numbers, First Things, February 2009, review of Is God a Mathematician? by Mario Livio