Philosophy

Aztec (Nahua) Religion

The Mexica cosmology of the Five Suns, Huitzilopochtli, Tlaloc and Quetzalcoatl, with sacrifice sustaining the world.

Before this sun there were four others, and each was destroyed. The first world, ruled by Tezcatlipoca and called Nahui Ocelotl, Four Jaguar, ended when jaguars came out of the dark and ate the people. The second, Nahui Ehecatl, Four Wind, under Quetzalcoatl, was swept away by hurricanes, and its people were turned into monkeys clinging to the trees. The third, Nahui Quiahuitl, Four Rain, belonged to Tlaloc and burned under a rain of fire; its survivors became birds. The fourth, Nahui Atl, Four Water, was governed by the water-goddess Chalchiuhtlicue and drowned in a flood that lasted fifty-two years, and the people became fish. The present world is the fifth, Nahui Ollin, Four Movement, and like the others it carries the date of its own destruction inside its name. Ollin means motion, and it means earthquake. This sun will end when the earth shakes itself apart and sky-monsters descend to devour what remains. The whole sequence is compressed into a single carved cosmogram on the great basalt disk now called the Sun Stone, where the four dead suns ring the face of the present one.

This is the cosmogony of the Nahuatl-speaking peoples of central Mexico — the Mexica of Tenochtitlan above all, whom later usage calls the Aztecs — as it survives in the alphabetic and pictorial record made in the century after the conquest. It is not a story of a beginning followed by a settled order. It is a record of worlds that fail. The deepest premise of Nahua religion is that existence is unstable, that the sun is mortal, and that its continuance is not guaranteed by any benevolent will but must be paid for, again and again, by the beings who live beneath it.

The fifth sun and the debt

The fifth sun was made at Teotihuacan, the vast ruined city north of the lake that the Mexica did not build and did not understand, and to which they gave the name meaning the place where the gods were made. In the Nahua telling, the assembled gods gathered there in darkness after the fourth world’s flood, and asked who would throw himself into the fire to rise as the new sun. The wealthy, glittering Tecuciztecatl volunteered; so did the small, scabbed, sickly Nanahuatzin, the most despised of them. Four times Tecuciztecatl ran at the pyre and four times the heat turned him back. Nanahuatzin shut his eyes and leapt without pausing, and the flames took him, and he rose as Tonatiuh, the sun. Shamed, Tecuciztecatl followed him into the embers and rose as the moon, equally bright — until one of the gods flung a rabbit across his face to dim him, which is why the moon is fainter and why a rabbit can be seen in it.

But the new sun hung at the horizon and would not move. It demanded that the others give what Nanahuatzin had given. So the gods opened their own breasts there at Teotihuacan, and their blood and death set the sun in motion across the sky. This is the founding transaction of the cosmos as the Nahua understood it. The sun moves because the gods died to move it, and it goes on moving only so long as that death keeps being repaid. The Nahuatl word for the repayment is nextlahualli — payment of a debt. Human beings stand inside a cosmic ledger they did not open: they were made from the gods’ sacrifice and their own existence is borrowed against it, and what they owe in return is the substance the sun runs on, the precious water that is blood, chalchiuhatl, the offering that keeps Tonatiuh climbing.

Read this way, the ritual killing for which the Mexica are infamous is not violence in the ordinary sense and not cruelty for its own sake. It is the architecture of a maintenance economy on a cosmic scale — a settling of accounts with powers who are themselves spending themselves to keep the world lit. The captive raised to the stone at the summit of the Great Temple, the priest’s own blood drawn in autosacrifice from earlobe and tongue and thigh, the quail and copal and rubber and paper folded into the offering caches: these are a graded scale of payment, with the human heart at its apex because the human heart, the teyolia, is where the most concentrated divine fire is lodged. The cosmos is a system of reciprocal consumption, and to live in it is to be both a debtor and, eventually, a coin.

The scale of the killing is one of the hardest problems in reading this religion, and it must be held with care. The Spanish accounts, written by conquerors and friars with every motive to render the conquered monstrous, give numbers — eighty thousand dedicated at one temple rededication — that are physically impossible and serve a propaganda of justification. Against that inflation stands the archaeology: the excavated Huei Tzompantli, the great skull-rack beside the Templo Mayor, and the offering deposits beneath it, confirm that organized ritual killing was real, sustained, and central, neither a colonial invention nor the industrial slaughter of the chronicles. The honest position lies between the apologist who would dissolve the practice into metaphor and the polemicist who would make it the whole of a civilization. Sacrifice was constitutive of the Mexica ordering of space and time, and it was also one element within an immense liturgical calendar of song, fasting, pilgrimage, and offering. The flower-war institution by which the Triple Alliance and its rivals met in arranged combat fed this economy with captives, and is treated with the polity in the empire’s own entry.

Teotl: the sacred as motion

Beneath the named gods runs a single concept, and it is the philosophical center of the whole system. Teotl is the word the Spanish translated as god, and the friars, hearing it through the grammar of Christian theology, took it to name discrete deities the way deus did. But teotl behaves in the sources less like a person than like a power — a sacred, dynamic, self-generating energy that constitutes and animates everything, and out of which the apparent plurality of gods, persons, animals, days, and things continuously emerges as passing arrangement. The philosopher James Maffie has argued, in the most ambitious modern reconstruction of this metaphysics, that Nahua thought is at root a process monism: there is one ceaselessly self-transforming sacred force, and what looks like a crowd of gods is teotl wearing masks, presenting itself now as rain, now as war, now as the maize that comes up green.

If that is so, then the cosmos is structured not by a hierarchy of separate beings but by agonistic inamic unity — the productive tension of paired, mutually constituting forces. Life and death, male and female, order and chaos, the hot and the cold, the dry above and the wet below: each pole requires its opposite and neither can be dissolved into the other. This is a dualism of complementarity rather than of warfare, closer to the interdependence of the two faces of a single thing than to a battle between good and evil. Teotl unfolds these tensions through patterned modes of motion — the oscillating, centering swing of the bouncing ball and the beating heart; the spiraling, twisting transmission of force in spun thread and braided cord; and the middling, weaving intermixture for which the Nahuatl is nepantla, the place and act of being in the middle, where opposed strands cross to make a fabric. Weaving, in this reading, is the root metaphor of the universe: the world is a textile under tension, perpetually woven and unwoven, and to exist is to be a knot in it.

This reconstruction is contested, and the contest is itself instructive. Critics note that it can over-systematize a fragmentary, colonially mediated record, and that it tends to read the personalist, anthropomorphic theology of the ritual record — gods with biographies, with faces and feast-days and impersonators who wore their skins — as secondary to an abstract energetics that may owe as much to modern philosophy as to the tlamatinime. The texts plainly contain both: a metaphysics of impersonal sacred flux and a teeming pantheon of named, characterful powers. Both are Nahua. The dual god of the highest heaven, addressed as the lord and lady of duality, of our flesh and our sustenance — the principle sometimes consolidated by twentieth-century scholarship under the single name Ometeotl, though the lexeme is vanishingly rare in the primary corpus and the consolidation is largely a modern act — sits at the apex of the system as the self-engendering source from which the inamic pairs descend.

The great gods

If teotl is the field, the teteoh are its concentrations, each a domain of the sacred given a face. Tezcatlipoca, the Smoking Mirror, is the most pervasive and the most dangerous: the night sky, sorcery, rule and the arbitrary destruction of rule, the unseen presence whose obsidian mirror shows the world and whose epithet names him the enemy on both sides. He is the god of the irreducible contingency of things, the power that gives kingship and takes it away on a whim, and his great feast staged exactly that — a chosen youth living a year as the god’s living image, ixiptla, in honor and delight before his ascent of the temple steps.

Against and entangled with him stands Quetzalcoatl, the Feathered Serpent, sky and earth fused in one body, the breath-wind Ehecatl, the morning star, and the patron of the priesthood and of writing and the calendar. He is the culture-bringer who, in one cycle of stories, descended to the land of the dead to gather the bones of the people of the former worlds and gave his own blood to quicken them into the human beings of the fifth sun — so that humanity itself is a thing penanced into existence. His great cult center stood not in the Mexica capital but at the colossal pyramid of Cholula to the east, the largest structure by volume ever raised, dedicated to him across centuries. His identification with the planet Venus binds the religion to the heavens with terrible precision: as the morning star he is Tlahuizcalpantecuhtli, the lord of the house of dawn, whose heliacal risings the calendar priests tracked and feared, for the star’s first appearance was held to shoot the unlucky with its rays. The Nahua observation of Venus was not idle astronomy but a watch kept on a god whose returns were dangerous.

Huitzilopochtli, the Hummingbird of the South, is the particular god of the Mexica, born already armed from the goddess Coatlicue at the mountain Coatepec to strike down his sister Coyolxauhqui and scatter his four hundred brothers — a birth that is the sun rising to drive off the moon and the stars, re-enacted every dawn and carved in stone at the foot of his shrine. He is the sun as warrior and the warrant of empire; the dead warrior and the woman dead in childbirth, herself a kind of warrior, accompany him across the sky. Tlaloc, by contrast, is older than the Mexica and older than the Toltec ancestry the Mexica claimed as the source of all civilized art; the rain, the mountains where the rain is kept, the lightning and the green growth and the standing water, served by a separate priesthood and given the second of the twin shrines atop the Great Temple, war and water sharing one summit. His paradise, Tlalocan, was a place of unfailing abundance reserved for those the water-powers chose by the manner of their dying. And Mictlantecuhtli, the lord of the dead, lord of the lowest of the nine underworlds, the fleshless god of the dust and the silence to which most of the dead descend, completes the vertical frame: a layered cosmos of thirteen heavens above and nine deaths below, with the slippery surface of the earth, tlalticpac, stretched precariously between.

The slippery earth and the human person

To stand on tlalticpac, the earth’s surface, is in Nahua thought to stand on something treacherous and smooth, where one slips and slides and falls. The proverb runs that it is slick, it is slippery on the earth. Human life is brief and uncertain, balanced over the open jaws of the underworld, and the whole of Nahua ethics is the discipline of keeping one’s footing on that surface — of walking the well-rooted middle way between excess and deficiency, of acquiring in ixtli in yollotl, a face and a heart, the developed countenance and the firm will that the schools, the calmecac of the nobility and the telpochcalli of the commoners, existed to cultivate.

The person who walks there is not a single soul but a composite of animating forces, mapped onto the body by the scholar Alfredo López Austin from the language of the texts. The tonalli, lodged in the head, is heat and vigor and the destiny conferred by one’s day-sign in the ritual count; it can be frightened loose, lost, or stolen, and much of curing was the work of calling it home. The teyolia, seated in the heart, is the seat of knowing, memory, and will, the part that does not perish but travels onward at death. The ihiyotl, housed in the liver, is the breath of passion and desire, which a disordered person could exhale to sicken others. Where the teyolia goes after death is determined not by virtue but by the manner of death: the warrior and the sacrificed go east to accompany the sun to its zenith; women dead in childbirth carry it down the western sky; those the rain takes — the drowned, the lightning-struck, the dropsical — go to Tlalocan; dead infants wait at Chichihualcuauhco, the tree that drips milk, to be born again; and the great mass of the ordinary dead make the four-year descent through the nine layers to Mictlan, to vanish at last into the dust. There is no reward and no punishment in this geography, only a sorting by the shape of one’s ending.

Flower and song

The instrument by which the Nahua thinkers reflected on all this was not the treatise but the poem, and they had a name for it: in xochitl in cuicatl, the flower and the song. The paired phrase — a difrasismo, two images yoked to name a third thing — is the Nahua word for poetry, philosophy, and truth-bearing speech together, the highest activity of the tlamatinime, the knowers of things. The surviving songs, copied in alphabetic Nahuatl by Nahua scribes in the second half of the sixteenth century, meditate with extraordinary gravity on exactly the instability the cosmology asserts: that nothing on the slippery earth endures, that friendship and beauty and life itself are borrowed for a moment, that there is no return from the land of the dead, and that flower-and-song may be the only thing that briefly escapes the universal dissolution — and even that may be a consolation we tell ourselves.

The figure these meditations gather around is Nezahualcoyotl of Texcoco (1402–1472), the philosopher-king and engineer of the lake-works, around whom a strand of near-monotheistic devotion to an invisible, unrepresentable giver of life — the one through whom we live, the lord of the near and the close — was traced by the scholar Miguel León-Portilla, who first won academic standing for the idea of a Nahua philosophy. That portrait must be handled with caution: later scholarship has shown the historical Nezahualcoyotl to have been heavily Christianized and romanticized by his own post-conquest descendants, so that the songs attributed to him are difficult to recover as personal work. What is not in doubt is the existence of the genre and the seriousness of its questions. The Nahua poet asks whether anything is true on the earth, whether one really lives, and answers, in song after song, that we come only to dream — and then sings anyway, because the singing is the one offering the slippery earth allows.

The record and its makers

Almost everything written here is known through documents made under Christian supervision, and the religion cannot be honestly described without describing the conditions of its survival. The single greatest source is the Florentine Codex, the twelve-book bilingual Historia general de las cosas de la Nueva España completed about 1577. It is conventionally attributed to the Franciscan Bernardino de Sahagún, but it is no longer defensible to call it his alone. It was produced over three decades by a team of named Nahua scholars trained at the Colegio de Santa Cruz de Tlatelolco — Antonio Valeriano, Alonso Vegerano, Martín Jacobita, Andrés Leonardo, Pedro de San Buenaventura — trilingual humanists in Nahuatl, Latin, and Spanish who interviewed elders, organized the testimony, wrote the Nahuatl columns, and painted the more than two thousand images. The manuscript is three partly independent texts at once: a Nahuatl column, a Spanish gloss that frequently censors or abbreviates it, and a pictorial column that sometimes says a third thing. Its makers were not informants but co-authors, bicultural intellectuals deciding, under coercive conditions, what of their ancestors’ world to render legible in alphabetic script. The digitized manuscript is held at the Biblioteca Medicea Laurenziana and made accessible through the Library of Congress scan and the Getty’s Digital Florentine Codex.

Around it stand the other monuments of the corpus: the Leyenda de los Soles and the Anales de Cuauhtitlán, bound together in the Códice Chimalpopoca, which preserve the fullest narrative of the five world-ages; the song-collections, the Cantares Mexicanos and the Romances de los señores de Nueva España, which preserve flower-and-song; the huehuetlahtolli, the ancient discourse of moral and political oratory gathered above all in Book VI of the Florentine and in the printed collection of Juan Bautista Viseo (1600); and the pre-conquest and early-colonial divinatory pictorials, the Codex Borgia and Codex Borbonicus, which encode the ritual calendar and its presiding gods in image rather than word. To read any of these is to read a dialogue and not an extract. The Nahua moral vocabulary of the slippery earth, of filth and balance and the well-rooted middle way, was actively redeployed by the friars to carry the Christian categories of sin and penance, and was Christianized in the very act of being written down — a productive misunderstanding in both directions, as Louise Burkhart has shown. Beneath the recorded surface, as David Tavárez has documented from the idolatry trials, ran a clandestine and uncurated indigenous practice that never passed through Franciscan hands at all.

Scholarship and the primary corpus

The study of Nahua religion is built on a public-domain foundation laid in the nineteenth and early twentieth centuries and a contested modern superstructure. Daniel Garrison Brinton produced the first substantial English engagement with the songs in Ancient Nahuatl Poetry (1887), valuable as a pioneering edition but framed by a racial-evolutionism that requires a critical headnote; the Smithsonian Libraries host the relevant Sahagún material in Kingsborough’s Antiquities of Mexico (1830–48). The indispensable iconographic commentaries on the divinatory codices are those of Eduard Seler (collected works, 1902–1923), still foundational for all subsequent Mesoamerican pictography even where the details are now revised.

The modern debate turns on three axes. Miguel León-Portilla’s La filosofía náhuatl estudiada en sus fuentes (UNAM, 1956; English Aztec Thought and Culture, 1963) established the legitimacy of treating Nahua thought as philosophy and centered it on the tlamatinime and flower-and-song. James Maffie’s Aztec Philosophy: Understanding a World in Motion (2014) reframed the whole system around processual teotl and the inamic polarities, drawing admiration and the charge of over-systematization in roughly equal measure. Davíd Carrasco’s City of Sacrifice (1999) supplies the necessary counterweight, insisting that the central practical expression of Mexica thought was ritual violence as cosmic maintenance, and that any reading that elides this — the choreography of debt-payment to the gods whose self-sacrifice at Teotihuacan sustained the fifth sun — domesticates a religion that did not ask to be made comfortable. Alfredo López Austin’s Cuerpo humano e ideología (UNAM, 1980) remains the standard reconstruction of the tripartite person, and the 2019 Texas volume The Florentine Codex: An Encyclopedia of the Nahua World, edited by Jeanette Favrot Peterson and Kevin Terraciano, gathers the current understanding of the codex as the joint Nahua-Franciscan work it was.

This is a living matter, not a closed one. Nahuatl is spoken by more than a million and a half people today, and contemporary Nahua communities sustain forms of devotion, healing, and observance continuous with what these sources record; the religion described here is the ancestral stratum of a tradition that did not end in 1521. It is described, accordingly, as architecture and not as instruction — the shape of an obligation rather than the manner of discharging it.

The mortal sun

What holds the whole of it together is the fact stated at the outset: the sun is not eternal, and it is not safe. The eschatology is built into the cosmogony, for the same logic that destroyed four worlds is at work in the fifth. Four worlds have already gone down in beasts and wind and fire and water, and the fifth was born from a sickly god’s leap into a fire and set moving only by the suicide of all the others. It runs on a debt that can never be paid off, only paid down, day by day, with the precious water that the gods first spent on its behalf. The Mexica did not expect gratitude from their sun and did not imagine it loved them. They understood themselves to be keeping it aloft by main force against the day the earth would shake, the date already written in its name, when Four Movement would arrive and the world of the fifth sun would fall like the four before it. To live under such a sun was to owe it everything and to be promised nothing, and to make the offering anyway — because the alternative was not a gentler world but no world, and the sun, for now, was still climbing.