The fifty-two chapters (not counting five appendices) that make up the main body of this book encompass lectures, articles, and letters/e-mails written over a period of about eleven years (from about 1998 through 2009). The material covers a variety of thematic topics both within Islam, in general, as well as in relation to its mystical dimension of tasawwuf - known in the West as 'the Sufi path' or 'sufism' - in particular. Taken collectively, the chapters and appendices provide a very good introduction to both the Sufi path and Islam.