Af amous passage in the preface to Lionel Trilling’s book The Liberal Imagination is widely quoted and just as widely misunderstood. Trilling, a Columbia University professor and literary critic, wrote that at the time — this was 1950 — that there was no articulate conservative or reactionary thought in America, only conservative or reactionary “impulses” expressed “in action or in irritable mental gestures which seek to resemble ideas.” Trilling’s point was not to criticize conservatism but to set up an argument for his work as a literary critic. Liberals, Trilling argued, needed to be challenged; they had grown complacent in the absence of a vigorous conservatism to spotlight liberalism’s deficiencies. He wanted “liberalism to be aware of the weak or wrong expressions of itself.”