Both psychology and philosophy study the functioning of mans consciousness. Where is the line of demarcation between these two disciplines? Mr. Schwartz explores this question, focusing on the requirements of–and the two different types of barriers to–human cognition. He discusses the distinction, in their origins and in their resolutions, between psychological and philosophical problems. He also cover such issues as: psychology and the conceptual faculty; philosophical and psychological aspects of reason-emotion conflicts; volition and neuroses; and free will vs. "will-power."