"Dawn and day; or, Buddha and Christ, Part I" is a philosophical and religious work by Henry Thayer Niles. In this book, the author compares the lives, teachings, and ideals of Buddha and Christ, examining their actions and philosophies through the prism of the interaction and mutual influence of these two world religious figures. Through in-depth analysis and research, the author reveals the similarities and differences between the teachings of Buddha and Christ, leading the reader to a new understanding of the history and ideals of these two great spiritual leaders. "Dawn and day; or, Buddha and Christ" is a fascinating book that reveals the depth of religious views and encourages openness and mutual understanding between cultures and faiths.