November 2004: George W. Bush is re–elected. Five days later, Alan Meister, a New York professor of philosophy, is diagnosed with lymphoma—not that he can prove the two are connected. While coping with the rigors of chemotherapy, Alan begins work on a long–postponed book titled The Health of a Sick Man, arguing that the core of Friedrich Nietzsche's philosophical thought was a decades–long attempt to cope with his lifelong incapacities—his blinding headaches, upset stomach, weak vision, and all–around frailty, not least his vexed relations with women. As Alan's treatment proceeds, he finds relief by imagining Nietzsche not as a historical figure, but as a character in his daily life, a reminder that his own heart continues to beat.

Rooted in the author's personal experience with lymphoma, this novel is a compound of reminiscences, aphorisms, anecdotes, and encounters: with Alan's errant daughter Natasha, who has returned home to help care for him; with mortal friends; with a mysterious hospital roommate; with students; with contemporary life as it reaches him through the newspapers and his readings. Steady, spare, and often bracingly funny, Undying cries out in a robust voice: I am.