21st Century Buddhism is a profound and accessible exploration of Buddhist philosophy as it is lived and practiced in the modern world. Drawing from over 2,500 years of Therav¿da teachings and decades of lived experience as a Buddhist monk, scholar, educator, and interfaith leader, Dr. Daney Dumdeang bridges ancient wisdom with contemporary human challenges. Rooted in the P¿li Tipi¿aka and classical commentaries, this book examines core Buddhist principles such as the Four Noble Truths, causation, ethical living, and the Middle Path, while applying them directly to modern life, social conflict, and personal transformation. Dr. Dumdeang offers a rare synthesis of rigorous scholarship and practical guidance, shaped by his work across Thailand, Sri Lanka, Burma, Laos, Cambodia, and the West. This revised edition expands upon teachings originally shared as guidance for lay practitioners, students, and spiritual seekers, emphasizing balance, compassion, and mindful engagement with the world. It also reflects the author's unique interfaith perspective, shaped by his journey through Buddhism and Christianity, without diluting the philosophical integrity of either tradition. 21st Century Buddhism is both a foundational text for serious students of Buddhist philosophy and a practical handbook for readers seeking clarity, moderation, and ethical grounding in an increasingly complex world.