William F. Buckley Jr., the erudite Ivy Leaguer and conservative herald who showered huge and scornful words on liberalism as he observed, abetted and cheered on the right's post-World War II rise from the fringes to the White House, died Wednesday. He was 82. Editor, columnist, novelist, debater, TV talk show star of "Firing Line," harpsichordist, trans-oceanic sailor and even a good-natured loser in a New York mayor's race, Buckley worked at a daunting pace, taking as little as 20 minutes to write a column for his magazine, the National Review.