387, [1] pp. Light brown leather spine and corners, maroon morocco spine label, gilt titles and rules, marbled paper over boards. A discussion of psychology and its philosophical implications, with chapters on perception, memory and suggestion, the train of thought, reasoning and logic, emotions, taste, freedom and the will, morals, and religion. Douglas includes in his discussion commentary on classic and contemporary philosophers such as Aristotle, John Locke, and David Hume.
