Best Omar Khayyam quotes - being, chastity, happiness, love, friendship Omar Khayyam Nishapuri (Persian عُمَر خَیّام نیشابوری‎; May 18, 1048, Nishapur - December 4, 1131, ibid.) was a Persian philosopher, mathematician, astronomer, and poet. He contributed to algebra by constructing a classification of cubic equations and solving them using conic sections. Known throughout the world as an outstanding philosopher and poet. Omar Khayyam is also known for creating the most accurate calendar in us