"An Answer to Dr. Priestley's Letters to a Philosophical Unbeliever" is a work marked by deep philosophical content and precise analysis of arguments. The authors of the book, William Gammon and Matthew Turner, examine the complex issues of faith and science using correspondence between Dr. Priestley - the eminent English theologian and philosopher - and a philosophical non-believer. Due to the high level of argumentation and logic, the book arouses interest in the reader and stimulates thought. "An Answer to Dr. Priestley's Letters to a Philosophical Unbeliever" is a thought-provoking work on the depth of creeds and philosophical debates.