José Ortega y Gasset was a Spanish liberal philosopher and essayist working during the first half of the 20th century while Spain oscillated between monarchy, republicanism and dictatorship. He was, along with Kant, Schopenhauer, and Nietzsche, a proponent of the idea of perspectivism.
Ortega's numerous and varied writings, in addition to The Revolt of the Masses, include The Modern Theme (1923), The Mission of the University (1930), On Love (1940), History as System (1941), Man and People (1957), Man and Crisis (1958), and What Is Philosophy? (1958). Often mentioned, as is Miguel de Unamuno, with the existentialists, Ortega expounded a philosophy that has been called "ratiovitalism" or "vital reason," in which he sought to do justice to both the intellectual and passional dimensions of man as manifestations of the fundamental reality, "human life."