by Tom Wicker
Viking; 271 pages; $10.95
Spiro Agnew, in his days as chief White House press scourge, once called Tom Wicker "the boy wonder of opinion makers." Half right. Though his New York Times columns can be pearls of persuasive good sense, Wicker is hardly a Wunderkind. At 51, he has been a foot soldier in the service of truth, newspaper division, for nearly three decades. He has risen from the Sandhill Citizen of Aberdeen, N.C.a backwoods weekly for which he sold ads, laid out pages and, incidentally, covered the news....