The Rubaiyát of Omar Khayyám

Omar Khayyam was a Persian poet and general genius who lived from 1048-1131. He wrote on Euclid, on the philosophy of mathematics and various aspects of geometry. He is also said to have helped correct errors in the Persian calendar. He wrote approximately a thousand quatrains of verse, which were famously translated much later in the 19th century by the British poet Edward FitzGerald.