William F. Buckley was always one of those conservatives it was good for liberals to keep abreast of. Liberal arguments for an expansive government role in American life had to go through Buckley’s mixture of cultured intellectual gravitas, take-no-prisoners debate skills and slightly mischievous humor, all of which made for a formidable presence across the American cultural landscape in the second half of the 20th century. Buckley died in 2008 at age 82, less than a year after Pat, his socialite wife of 56 years, passed on and left him desolate. He died, however, in the wake of a life…