The Need to Believe
History of religions. The questions we never stopped asking
A 300,000-year journey through the history of human spirituality, from Paleolithic caves to artificial intelligence. Across 22 chapters organized in 8 parts, the book examines why the human brain tends to produce religious beliefs, how the great spiritual traditions organized the world, and what forms the need to believe takes in a secular and technological era.
Written from the perspective of an atheist who does not despise what he observes, it integrates cognitive science, history of religions, anthropology, and personal reflection. From the cognitive roots of belief (HADD, Theory of Mind) through Mesopotamian temples, the portable homeland of Judaism, Mesoamerican cosmovisions, African oral traditions, the institutional solidification of faith, secular ideologies, digital religiosity, and the emergence of AI as an existential mirror.
The prologue begins in a small Protestant church in Cuba, where a child played the piano without being able to say Amen. The epilogue returns to that same church, decades later, with the understanding that listening, without entering, is also a form of participation.
This book is available for free as an open access publication on Zenodo, in Spanish and English.