Comma for either/or — dharma, courage. Spelling forgiving — corage finds courage.

    reviser · translator · scholar

    Thabit ibn Qurra ثابت بن قرة

    Mathematician from Harran, a pagan Sabian in a city of star worshippers, recruited to Baghdad by the Banu Musa. He revised the Arabic Euclid and Ptolemy with a mathematician's eye, which is why later readers preferred the versions he touched.

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