 His article ‘Karl Kraus und die schwarze Magie der Sprache’ appeared in "Der Monat" (VI/64) in 1954; while his paper on Rilke, ‘Improvisationen zur ersten der Duineser Elegien’, presented at a congress in Italy in 1982, is published in a collective volume.Heller corresponded with a number of thinkers of his day, whose names include (in the chronological order of the date of birth, not necessarily in the order of the respective correspondents’ importance) the following.Perhaps his most notable correspondent had been Hannah Arendt; perhaps, indeed.