This book is a collection of some typical works of Dr. Nguyen Quoc Tuan, former Director of the Institute for Religious Studies, Editor-in-chief of the Journal of Religious Studies. The writings in this book are not only research results but rather are Dr. Nguyen Quoc Tuan's reflections on religion and new approaches to religious research, especially in religious archeology, religious anthropology - areas where the author has a lot of time to engage and experience. The content of the book consists of two main parts: Religious Studies and Religious Archeology. In the first part: Religious Studies, the articles are organized into 3 topics: General issues of religion, Issues of belief and specific religions. The second part: Religious Archeology includes articles that Dr. Nguyen Quoc Tuan devoted himself to providing readers with profound knowledge about Buddhism, Taoism, and beliefs and interdisciplinary knowledge such as archeology, history, culture, art, sculpture, architecture ...