Fancy universities sometimes like to give each member of the incoming undergraduate body a copy of the same book, which is intended to inaugurate them in the Great Intellectual Tradition. It occured to me partway through this one that "The Liberal Imagination" would make an excellent choice for this. It's not that everything written here is correct, or even that people still broadly agree with Trilling; it's more that the book seems to gather many of the free-floating critical ideas of his time and give them their canonical, most elegant expression. Nowadays, if you're a critic, you're probably not arguing against Trilling, but you probably are arguing against someone who made their bones fighting him forty years ago.
Often these are ideas about the relationship between the world and literature and how "the liberal imagination" connects these. Trilling believes that the novel has the heroic task of making us better people (is "morally hygienic" as Louis Menand puts it in his intro) by intelligently excavating society's dense texture and training us in making wise discriminations between appearance and reality. But this isn't advanced in the service of a brittle "dogmatic realism" (a term he uses to attack Sartre at one point, in fact), but comfortably sits with an endorsement of modernist books like those of Kafka and Faulkner. Likewise, Trilling enthusiasm for Freudianism is above all as another tool in the critic's kit, not a master interpretive schema: he always wants to amplify, complicate, nuance instead of simplify or reduce.