Post-Traumatic Stress Disorder increasingly afflicts veterans of modern warfare. The RAND Corporation has reported that it affects almost 20 percent of military service members who have returned from Iraq or Afghanistan. Tragically, PTSD impacts all aspects of life. Some vets can’t hold jobs or sustain relationships. Others have recurrent nightmares or won’t leave home. To begin healing, says Edward Tick, we must see PTSD as a disorder of identity itself. War’s violence can cause the very soul to flee and be lost for life.

In this strikingly original and groundbreaking audiobook, Dr. Shay examines the psychological devastation of war by comparing the soldiers of Homer’s Iliad with Vietnam veterans suffering from post-traumatic stress disorder. Although the Iliad was written 27 centuries ago, it has much to teach about combat trauma, as do the more recent, compelling voices and experiences of Vietnam vets.

Decades before the American Revolution, Benjamin Franklin lamented that English settlers were constantly fleeing over to the Indians - but Indians almost never did the same. Tribal society has been exerting an almost gravitational pull on Westerners for hundreds of years, and the reason lies deep in our evolutionary past as a communal species. The most recent example of that attraction is combat veterans who come home to find themselves missing the incredibly intimate bonds of platoon life.

In Achilles in Vietnam, Dr. Jonathan Shay used the story of the Iliad as a prism through which to examine how ancient and modern wars have battered the psychology of the men who fight. Now he turns his attention to the Odyssey, the story of a soldier's homecoming, to illuminate the real problems faced by combat veterans reentering civilian society. The Odyssey, Shay argues, offers explicit portrayals of behavior common among returning soldiers in our own culture: danger-seeking, womanizing, explosive violence, drug abuse, visitation by the dead, obsession, vagrancy and homelessness.

We are living through the most prosperous age in all of human history, yet we are listless, divided, and miserable. Wealth and comfort are unparalleled, but our political landscape is unmoored, and rates of suicide, lone­liness, and chronic illness continue to skyrocket. How do we explain the gap between these truths? And how should we respond? For evolutionary biologists Heather Heying and Bret Weinstein, the cause of our troubles is clear: The accelerat­ing rate of change in the modern world has outstripped the capacity of our brains and bodies to adapt.