Partially based on his lectures, Dürrenmatt's major essays include Monster Lecture on Justice and Law, with a Helvetian Interlude (1969), Connections: Essay on Israel (1975), and The Collaborator: A Complex (1976). Dürrenmatt's dramaturgical insights encompass politics, epistemology, natural science and existentialism, all of which he builds up into the broad outlines of model plot. His understanding of philosophy as a pursuit necessary to the existence of man is akin to that of Kierkegaard and Socrates, whose suspicion of the ultimate elusiveness of true knowlege he ties in with an epistemological constructivism in the tradition of Immanuel Kant. Recognition of the right of one and all to freedom and individuality is central to Dürrenmatt's thinking, as is his belief in justice as its vital counterpole and a basic requirement for any human society.