Godwin and Kaye write very engrossing novels with brilliant characters.
This is the sequel to the "Masters of Solitude", another novel I enjoyed very much. My copy is signed, so I can't share it with you, but I recommend hunting it down for another good fantasy/sci-fi read.
Here's what the back cover says for "Wintermind":
In the aftermath of a bloody war, two cultures rediscovered one another after long centuries of isolation: the Coven, a pastoral tribe with strange telepathic powers, and the City, a race of immortals, who preserved man's scientific heritage. Slowly, the painful union of these two worlds began. But their joining unleashed an awesome, hidden force that overshadowed both races' future.
A haunting saga of America in the far future, WINTERMIND has all the color and sweep of a great epic, combined with human insight and intimate characterization of two of the field's most accomplished talents.
"Extraordinary...Kaye and Godwin successfully intertwine psychology, religion, myth, and the clash of instinct versus intellect." - Fantasy Newsletter
Not too bad - in the post-apocalyptic vein.
A thousand years after war and invasion shattered American society, City people live for hundreds of years within the barriers of their computerized Gate. Outside, life is short and bitter, as neo-pagans with telepathy struggle to survive against Mrikan good ol' boy bandits. However, within the last decade some of the barriers have come down, and life is changing for all... to the dismay of Shalane, an old-fashioned priestess whose husband has lost his faith, fascinated with all things new, and whose daughter wholeheartedly considers herself a City girl. Beyond the family conflicts, there is the mystery and the terror of the legend known as the Wintermind.... Can the doctor, Corian, solve the riddle and save the people he loves?