pIn this new book, Florian Klinger gives readers a basic action-theoretical account of the aesthetic. While normal action fulfills a determinate concept, Klinger argues, aesthetic action performs an indeterminacy by suspending the action's conceptual resolution. Taking as examples work by Tino Sehgal, Kara Walker, Mazen Kerbaj, Marina Abramovic, Cy Twombly, and Franz Kafka, the book examines indeterminacy in such instances as a walk that is at once leisurely and purposeful, a sound piece that is at once joyous and mournful and mechanical, or, a sculpture that at once draws one in and shuts one out. Because it has irresolution as its point, aesthetic action presents itself as an unsettling of ourselves, our ways, our very sense of who we are. As performers of such action, we don't recognize one another as bearers of a shared human form as we normally would, but find ourselves tasked anew with figuring out what sharing a form would mean. p pIn conversation with philosophers such as Kant,