By Victor Davis Hanson. Free Press. 541 pp. $28
By Steven
Solomon. Simon &' Schusfer. 606 pp. $30
By Diane E. Davis.
Temple. 391 pp. $24.95
By Robert S. McNamara
with Brian VanDeMark. Random House.
414 pp. $27.50
By Alan Ryan.
Norton. 416 pp. $30
By George Johnson. Knopf.
357 pp. $27.50
By I. Bernard Cohen. Norton. 368 pp. $25
Faith and art once nurtured each other. Now the relationship is uneasy. Two writers ponder what has gone wrong.