We were dumbfounded and profoundly saddened to learn yesterday of the sudden and untimely death of Tim Russert, NBC’s Washington Bureau Chief and moderator of “Meet the Press.” The high professional esteem in which he was held by colleagues and public officials was inseparable from their personal affection for this dedicated and friendly journalist. He is praised for his command of the issues and keen analysis, and his nonpartisan, “equal opportunity” thoroughness in questioning guests of all political stripes. While he made his subjects sweat, he also exuded a genuine enthusiasm for politics.