Tetsawitl is a concept proper to the Nahuatl language.Nahuatl language. Its meaning points to be the "subtle air of the Gods". That finite air arrives in the social and cultural environments of the Nahua men and women of Acatlán, municipality of Chilapa, Guerrero. So say the people, so it is told from past generations and, today, it has remained in the collective memory of the inhabitants through the stories (Tlahtoltin). The intention of this book is to write these stories and argue them in the context of the wisdom of the native peoples.