Because of President Ruiz's father, "Regidor" Adolfo Ruiz Tejada's, premature death, Adolfo was raised and educated by his mother. María Cortines de la Cotera was the daughter of Diego Francisco Cortines y Gutiérrez de Celis (1829, Bielva, Cantabria, Spain), and María Dolores de la Cotera y Calzada (1824, Veracruz, Mexico), whose father was from Peñarrubia, also in Cantabria. His mother taught him to read and write at the age of 3. Later, he entered a school directed by Joaquín Jerónimo Díaz and Florencio Veyro, called "Escuela Amiga", but did his secondary educational studies at the Colegio de los Jesuitas, and at the age twelve, he attended the reputed "Instituto Veracruzano", famously directed by the poet Salvador Díaz Mirón. Adolfo learned from his mentors about liberalism, a political principle he would apply during his entire political career. In addition, it was at school where he acquired his fanatical interest in baseball. He always wanted to attend a university, but the American Invasion of 1914 forced him to abandon his studies. His first job was as an accounting assistant at a commercial textile company.