Leading voices include the poet Juan Ramón Jiménez, the academics and essayists Ramón Menéndez Pidal, Gregorio Marañón, Manuel Azaña, María Zambrano, Eugeni d'Ors, Clara Campoamor and Ortega y Gasset, and the novelists Gabriel Miró, Ramón Pérez de Ayala, and Ramón Gómez de la Serna. While still driven by the national and existential questions that obsessed the writers of '98, they approached these topics with a greater sense of distance and objectivity. Salvador de Madariaga, another prominent intellectual and writer, was one of the founders of the College of Europe and the composer of the constitutive manifest of the Liberal International.