Judah haLevi was a Sephardic Jewish poet, physician and philosopher. HaLevi is considered one of the greatest Hebrew-language poets and is celebrated for his secular and religious poems, many of which appear in present-day Jewish liturgy. 1075 – 1141; died at about 66. Alive at the same time as Omar Khayyám, Averroes, William the Conqueror, Anselm of Canterbury, and Zhu Xi. Wiki link