The justification for this bibliographical collection is that it forms the core for my Doctor of Literature Degree. The reader can form his or her own opinion if the assessment by the examining authority has been accurately formulated. Its opening paragraph “The candidate presented a portfolio of publications for assessment accompanied by a critical commentary in line for the regulations for the degree entitled “Interdisciplinary Insights Applied within a Theological Context”. The portfolio was extremely wide-ranging and included work principally in the area of theology and secondarily in the areas of philosophy and psychology.” With the exception of the first and last two listings, this compendium is a collection of my books published since 2000. Listed in chronological order it outlines the paths that my thinking has followed since then. My intention in publishing it is that others might find an item of interest in this list of philosophical investigations that could provide a starting point for their own investigations. None of the books are the last word or exhaustive of the subjects they cover. However, they represent a plateau of personal satisfaction that I had reached at the time of writing them. Wherever possible, in light of copyright regulations or file availability, I have made a digital copy freely available to the public.