Next, in Critchley's discussion of Aristotle's famously puzzling comments about how tragedy evokes pity and fear in people participating in a live performance, Critchley turns to Jonathan Lear for help in understanding Aristotle's puzzling words (pages 190-192; also see Critchley's paraphrase of Lear's point on page 279). Critchley says, "Lear's view is that tragedy provides a safe environment in which emotions are raised and then relieved" (page 191). In a word, Lear is describing what is known as containment.
In the glossary in Dr. Justin A. Frank's book Trump on the Couch: Inside the Mind of the President (Avery/ Penguin Random House, 2018, pages 239-257), Dr. Frank defines containment in detail (pages 239-241).
In conclusion, Critchley himself has highlighted twelve theses that he develops in his thought-provoking new book. Instead of trying to explain his twelve theses and then critique each of them in turn, I have only highlighted certain points in in his new book about tragedy's philosophy.
For a bibliography of Ong's 400 or so publications, including those twenty-three articles, see Thomas M. Walsh's "Walter J. Ong, S.J.: A Bibliography 1929-2006" in the book Language, Culture, and Identity: The Legacy of Walter J. Ong, S.J., edited by Sara van den Berg and Thomas M. Walsh (Hampton Press, 2011, pages 185-245).