A sculptor creates a bust of Omar Khayyam Neyshaburi (1048-1131) in the courtyard of his tomb in Neyshabur on May 17, 2016 to celebrate Khayyam National Day. The Persian mathematician, astronomer, and poet is chiefly known to English-speaking readers through the translation of a collection of his quatrains in the Rubaiyat of Omar Khayyam (1859) by the English writer Edward FitzGerald. (IRNA/Morteza Aminorroayai)