This is the sound my cat, Professor Boskowitz, makes when he holds office hours. He's emeritus at Columbia, where he was a student of Trilling's in the '60s. Boskowitz became well-known in the late '70s for his monograph Feline Aesthetic: Disjunction and the Nocturnal Paraphrase. He counts The Liberal Imagination as one of the more important works of the past century and disdains the complacent morality of the entertainment class.