This volume contains selections from the philosophical writings of James Frederick Ferrier (1808–1864). Ferrier was the Professor of Moral Philosophy at the University of St Andrews between 1845 and 1864 and he was one of the earliest post-Hegelian British idealists. He develops a system of absolute idealism via a rejection of the Scottish school of common sense and Enlightenment philosophy in general. These selections focus on his primary philosophical interests: epistemology and ontology. Ferrier denies the possibility of a science of man and suggests that philosophy should focus on self-consciousness, the defining feature of humanity.