Abstract: This Introduction outlines the purpose of the book, namely to study a very important but neglected aspect of the Oxford Movement. The student of the Oxford Movement is very familiar with the concept of ethos. The book's contention is that in the language of the Tractarians, ethos is a concept rich in consequences, involving a complex theory of religious knowledge which deeply influenced the genesis and development of the Oxford Movement. The Introduction talks about the genesis of the book and outlines the chapters in turn.

Keywords: Oxford Movement, ethos, Tractarians, religious knowledge, development of Oxford Movement,