This introduction to the Mexica (or Aztec) cosmos explores sacrifice as both the foundation for and an ethical response to existence in the richly textured world of sixteenth-century Mexico. Drawing on archaeological remains, sculptures, pictorial and calendrical codices, and original translations of Nahuatl poetry and folktales, Kay Almere Read describes a world in which every being was allotted a specific lifetime and where sacrifice was the mechanism by which time functioned. This book presents a convincing interpretation of what sacrifice meant in the religious life of the Mexica people - and how human sacrifice of staggering proportions could be accepted.