Yasmin Tirado-Chiodini said this quote

All Americans were immigrants at one point or another,” he explained in his letters to his parents. Even his father Manuel migrated to Puerto Rico. Manuel was deemed a Peninsular, an immigrant from Spain, and sometimes even the Puerto Rican-born, the criollos, resented the Spanish-born newcomers. Manuel was familiar with being singled out, although not quite as much as Antonio felt while in New York. “It is amazing how people tend to forget their past,” Antonio wrote to his parents, surprised. “I recall what you told me about Maestro Rafael, Papá, when he said to you ‘never forget your history.