This book is an outcome of a research conducted on ethnophilosophy of Arunthathiyars. Ethnophilosophy consists of shared beliefs, values and traditional wisdomof an ethnic group. It is found in their wise-sayings, proverbs, stories, mythology, rituals andreligion. Ethnophilosophy is considered as a property of a community rather than an activity of an individual. The first part deals with the ethnographic data of Arunthathiyars who are mostly scavengers and cobblers, the ‘dalits of the dalits’ in Tamil Nadu.Their counterparts in the other parts of India may be Mādhigas, Māngs, Bhangis, Chamārs, Mochis and so on. The second partdeals with ethnophilosophy which is culled out from their mythical, religious, ritual, historical, professional and identity consciousness. This is the study of their ‘collective consciousness’. It is anenquiry on ‘popular consciousnesses’. Hence it is a research on “folk” philosophy, philosophy of ‘little tradition’, ‘subaltern’ philosophy and philosophy of the ‘periphery’ or ‘margin’.