Death

Death is a constant presence in the book on a number of levels, from practically the first words of the Introduction (which refer to the author's death) to the final words of the epilogue (which refer to the life of the author's wife in the aftermath of his death). It is a subject of discussion, contemplation, and analysis; it is a trigger for, and component of, most of the book's key themes; and, ultimately, its presence is the trigger / catalyst for both the author and his writings to consider the book's primary question ... what is the meaning of existence?

Cancer

Cancer, the cause of the author's death and an element in several experiences to which he refers in the course of the narrative, is arguably the most apparent / evident cause of death referenced in the book. There are references to it being curable / cured, but by far...