In this poignant and startlingly original book, Brian Doyle examines the heart as a physical organ--how it is supposed to work, how surgeons try to fix it when it doesn't--and as a metaphor: the seat of the soul, the power house of the body, the essence of spirituality. In a series of profoundly moving ruminations, Doyle considers the scientific, emotional, literary, philosophical, and spiritual understandings of the heart--from cardiology to courage,...