When I was a student at the University of Edinburgh I took a course called Social Philosophy. I cannot remember the instructor’s name but it was my most difficult course and I had to do a paper on the soul. And that was my original contribution to the definition of soul. It was my own writing.
— Robert Indiana
Excerpt from interview with Susan Elizabeth Ryan, November 14, 1991, Robert Indiana: Figures of Speech Archive, 1987–2005.