Luis de León OESA (Belmonte, Cuenca, 1527 – Madrigal de las Altas Torres, Castile, Spain, 23 August 1591), was a Spanish lyric poet, Augustinian friar, theologian and academic.
While serving as professor of Biblical scholarship at the University of Salamanca, Fray Luis also wrote many immortal works of Spanish Christian poetry and translated both Biblical Hebrew poetry and Latin Christian poetry into the Spanish language. Despite being a devout and believing Roman Catholic priest, Fray Luis was descended from a family of Spanish Jewish Conversos and this, as well as his vocal advocacy for teaching the Hebrew language in Catholic universities and seminaries, drew false accusations from the Dominican Order of the heresies of being both a Marrano and a Judaiser. Fray Luis was accordingly imprisoned for four years by the Spanish Inquisition before he was ruled to be completely innocent of any wrongdoing and released without charge. While the conditions of his imprisonment were never harsh and he was allowed complete access to books, according to legend, Fray Luis started his first post-Inquisition University of Salamanca lecture with the words, "As I was saying the other day..."
