As a lawyer, he was an ex officio defender in Mexico City, agent of Ministerio Público and member of the state treasury commission of Coahuila.
[6] Without considering himself an anti-liberal, he did not agree with the ideas of the Mexican Revolution, and criticized the revolutionary leaders Francisco I. Madero, Pancho Villa, Venustiano Carranza, and Plutarco Elías Calles.
[7] As historian, he started with his home state when he wrote Historia de Coahuila, far from pronouncing himself as an indigenist or regionalist, the work aims to lean towards a Hispanist and Americanist style.
[8] In 1916 he settled in Spain, despite not applying for nationality, he considered this country of residence as his new homeland; He met the Venezuelan Rufino Blanco Fombona and collaborated for the Editorial América.
Authors such as the English economist William Cunningham or the French historian Charles Seignobos severely judged the period of domination of Spanish Empire.
Among his students, was Vicente Rodríguez Casado, founder of the School of Hispanic-American Studies (Seville) and the Hispano-American University of Santa María de La Rábida (Huelva).