 "Notes and Counter Notes" also reprints a heated war of words between Ionesco and Kenneth Tynan based on Ionesco's above stated beliefs and Ionesco's hatred for Brecht and Brechtian theatre.Ionesco is often considered a writer of the Theatre of the Absurd, a label originally given to him by Martin Esslin in his book of the same name.Esslin, placed Ionesco alongside contemporaries Samuel Beckett, Jean Genet, and Arthur Adamov, calling this informal group "absurd" on the basis of Albert Camus' concept of the absurd.