Asked five questions by his grandson, the author responds step by step to illuminate the answers dormant in the young man's mind, laying out the perfect logic of Christianity that reveals what it is to be human. Science and religion are seen in simple accord when both are on track in their own realms: truth cannot contradict truth. But the astounding conclusion is that mankind, now in evolution's final phase, is neither the only intelligent life form in the cosmos nor the only one redeemed by Christ.