Summary: More than twenty years ago, the publication of the Rig-veda was secured with the efforts of Bunsen. The text discusses the continuity in the growth of language and religion, tracing back to the elements and roots of human speech and thought. The study of ancient languages and religions, particularly Buddhism, is highlighted, challenging traditional views and shedding light on the diverse aspects of Buddhist philosophy and practice. The significance of understanding the national character and beliefs of different cultures, such as Hinduism and Buddhism, is emphasized, urging a more empathetic and comprehensive approach to studying and interpreting religious texts and practices. The text also delves into the vast Buddhist literature, including Chinese translations of Sanskrit texts, emphasizing the need for meticulous research and translation to uncover the rich heritage of religious traditions and beliefs. Through the exploration of ancient languages and religions, a deeper understanding of human civilization, thought, and spirituality is sought, paving the way for a more enlightened and inclusive perspective on the diversity of religious beliefs and practices worldwide.