Major writers and novelists include Rómulo Gallegos, Teresa de la Parra, Arturo Uslar Pietri, Adriano González León, Miguel Otero Silva, and Mariano Picón Salas. The great poet and humanist Andrés Bello was also an educator and intellectual (He was also a childhood tutor and mentor of Simón Bolívar). Others, such as Laureano Vallenilla Lanz and José Gil Fortoul, contributed to Venezuelan Positivism.