Considered one of the major Spanish poets of the 20th century, Rafael Alberti (1902–1999) was the author of over twenty volumes of poetry, including Marinero en Tierra, Cal y Canto, and La Amante. He also wrote several plays and the celebrated memoir, La Arboleda Perdida (The Lost Grove). His many honors include the Premio Cervantes, the America Award, and the Lenin Peace Prize among others. Sobre los ángeles (Concerning the Angels) is regarded by many as his magnum opus.