Calderón de la Barca

Pedro Calderón de la Barca (1600–1681) was a leading Spanish playwright, poet, and dramatist of the Baroque Golden Age. He is best known for the 1635 play La vida es sueño (Life Is a Dream), whose famous line — "Life is a dream, and dreams are merely dreams." — encapsulates its exploration of reality, free will, and illusion.