The author spent some 35 years practising as barrister and solicitor in New South Wales. His studies at Sydney University's Law School in the 1960s were balanced with studies in the philosophy of Aristotle and Aquinas at Sydney's Aquinas Academy. Philosophy has ever been his first love. His authority to offer the commentary and criticism on the philosophical issues in the text derives from his studying under teachers Fr Austin M Woodbury S.M., Ph.D., S.T.D., foremost philosopher and theologian of the Catholic Church in Australia and his assistants, John Ziegler B. Sc., Geoffrey Deegan B.A., Ph.D. and Donald Boland Ll.B, Ph.D.