In The Philosophy of Arthur C. Danto, ed. Randall Auxier and Lewis Edwin Hahn (Chicago: Open Court, 2013), 671-700.
The realm of spirit is dark and difficult terra incognita so far as philosophical understanding is concerned, though it is as well, so far as human understanding is concerned, the most familiar territory of all. It is in the realm of spirit that we exist as human beings. —Arthur Danto