Moments of profound revelation on the part of Antonio parallel the epiphanies felt by Stephen Dedalus in James Joyce's Portrait of the Artist as a Young Man. Indeed, Anaya himself writes about "epiphany in landscape," that profound sense of place that humans have with their environments — in particular, the relationship that Chicano/as have with the earth. The first epiphany occurs when Ultima opens Antonio's eyes to the beauty of the llano and the magic of the river valley. For the first time, Antonio feels the pulse of the earth and the unity between it and the various life forms, and he dissolves himself "into one strange, complete being."
The novel is written in a simple style that demonstrates the perceptive images of Anaya's understanding of the rural culture of Chicano/as in eastern New Mexico in the 1940s. It is bilingual in that it is interspersed with Spanish phrases and terms, but it lacks the fluid code-switching found in everyday life.
The autobiographical ethos of the novel has been recognized by many critical reviewers, and Anaya himself has been very explicit on this matter. The trilogy comprised of Bless Me, Ultima, Heart of Aztlan, and Tortuga has been acknowledged by Anaya as somewhat autobiographical in the sense that he uses the memories of his experiences as sources for his writings. His mother was from the Puerto de Luna valley, where Billy the Kid, el Bilito, attended Mexican dances and wrestled in the streets with his Mexican-American friends. Anaya's father was a vaquero who knew the hard work of the large ranchos on the plains. More affinities between the life of Antonio and that of Rudolfo can be traced, but the novel is not truly autobiographical, nor is it intended as such. Rather, it is a cultural novel that explores the ancestral heritage of Chicano/as and its relevance for their lives in the present. Much like Rodolfo Gonzales' epic poem, Yo Soy Joaquin, this novel frames an ethnic identity that resonates strongly with the Chicano/a readership in the United States. Other important Chicano/a literary works that address similar issues include Jose Antonio Villareal's Pocho, Sandra Cisneros' House on Mango Street (written from the perspective of a young girl), Richard Rodriguez' Hunger of Memory, and Mary Helen Ponce's Hoyt Street: An Autobiography.
