The Mexica Manuscript was discovered about twelve years ago hidden in a niche of a burried wall during excavations in the Cathedral Square of Mexico City. Written in an early form of the Nahautl language by Tlacaelel, the principle advisor of three kings whose reigns encompass the creation of the Aztec empire, and long thought to be the man responsible for the bizarre form it assumed, the document has been the subject of extensive study by archaeologists and anthropologists interested in prehistoric Mesoamerica. This book, however, is intended for a wider audience. Intrigued by the contemporary relevance of the ideas it contains, the author has prepared an English translation, modernized the syntax, and included interpretive comments to make Tlacaelel's reflections available to scholars in other fields. Reflections that offer brief glimpses of known and unknown aspects of Aztec history, colorful descriptions of bloody battles and cruel rituals, and above all, penetrating insights concerning the human condition and the ancient problem of evil in the world.