Moving from ancient Greece to modern biotechnology, Crazy Medicine uncovers the shared anatomy of miracle and method. The Hippocratic physician, the medieval monk, the Renaissance anatomist, and the modern clinician each confront the same question in different vocabularies: what is the body, and what does it mean to heal it? Johns explores the theological roots of care, the moral aftermath of experimentation, and the quiet continuity between the healer's art and the priest's prayer. Through scenes of wonder and catastrophe-radium tonics, electric faith healers, battlefield surgeons, and laboratory pioneers-he reveals how the boundaries between medicine and religion have never truly closed.

At its heart, Crazy Medicine is a meditation on attention-the act that turns treatment into meaning. Drawing from philosophy, literature, and contemporary science, Johns argues that the art of healing depends not on mastery but on witness. From Simone Weil's definition of attention as "the rarest and purest form of generosity" to modern neuroscience's rediscovery of empathy's biological power, the book shows how the human need for coherence binds flesh and faith together across centuries.

Written in a clear, narrative style that blends cultural history with moral reflection, Crazy Medicine is both elegy and revelation. It asks what happens when progress forgets compassion, and what remains when medicine has done all it can. The answer, Johns suggests, lies in the gesture that has never changed: one person staying with another, until the end.

For readers of Atul Gawande, Siddhartha Mukherjee, Susan Sontag, and Anne Fadiman, this book offers a profound reexamination of the body as the final frontier of meaning-where science meets faith, and care becomes the last surviving ritual of hope.