The Question Concerning Technology is a work by Martin Heidegger, in which the author discusses the essence of technology. Heidegger originally published the text in 1954, in Vorträge und Aufsätze.

Hölderlin's Hymn "The Ister" is the title given to a lecture course delivered by German philosopher Martin Heidegger at the University of Freiburg in 1942. It was first published in 1984 as volume 53 of Heidegger's Gesamtausgabe. The translation by William McNeill and Julia Davis was published in 1996 by Indiana University Press. Der Ister is a poem by Friedrich Hölderlin, the title of which refers to an ancient name for a part of the Danube River.