Julian Huxley's Religion Without Revelation explores spirituality without theism or supernatural revelation. Huxley proposes a religion of reality based on science, evolution, and human experience, arguing that awe of the universe can replace traditional beliefs, providing a secular guide for modern humans. It offers an approach that celebrates the wonder of the universe and human potential, suitable for believers, agnostics, and skeptics alike. First published in 1927 and revised in 1956, the book serves as a call to rethink religious understanding to align with the pursuit of scientific truth.