If I were in the unenviable position of having to study my work my points of departure would be the "Naught is more real ..." and the "Ubi nihil vales ..." both already in Murphy and neither very rational.
Samuel Beckett (1906–1989), Irish dramatist, novelist. Disjecta, p. 113, Grove Press (1984).
From a letter to Sigle Kennedy dated June 14, 1967. Beckett is referring to the ideas of two philosophers: Democritus ("Naught is more real than nothing") and Geulincx ("Ubi nihil vales, ibi nihil velis": "Want nothing where you are worth nothing").