Essays
Rasmus Nielsen in May 1849
Nielsen's doctrine that faith and knowledge are uensartede Størrelser is usually credited to his encounter with Kierkegaard. But he states heterogeneity of the natural and the supernatural, in his own emphasis, in a book finished before he reviewed the Postscript — and in the review the word is still largely Kierkegaard's, being quoted. Dating the pivot from the three books of 1849–50.
On: Evangelietroen og den moderne Bevidsthed: Forelæsninger over Jesu Liv, Mag. S. Kierkegaards "Johannes Climacus" og Dr. H. Martensens "Christelige Dogmatik", Evangelietroen og Theologien: Tolv Forelæsninger, holdte ved Universitetet i Kjøbenhavn i Vinteren 1849–50 · updated 2026-08-30
A Life of Hans Brøchner
The catalog bio sketches the professor. A Fredericia local-history page adds the life behind him: a childhood cut short by his mother's death, a Roman engagement broken by religion, a family fortune burned twice by the same town's two bombardments, a brief term in parliament, an early widowing — and a bibliography whose shape, read against the dates, turns out to follow the life closely.
On: Hans Brøchner · updated 2026-09-06
A Life of F.C. Sibbern
The catalog bio gives the professor of 1813–1870. A literary-historical portrait from the Royal Danish Library's text portal, written to introduce Sibbern's own Gabrielis novels, gives the life around him — and along the way explains where the pen name came from, why a Norwegian professorship went begging, and how losing a woman to silence rather than to a rival produced the book he is now chiefly remembered for. Kim Minke's chapter in Dansk litteraturs historie, added here, supplies what a biography leaves out: the doctrine of personality that came out of the same crisis, the »livspoesi« of the late continuation, and the case for reading the first Gabrielis book not as a wertheriade but as the first Danish Bildungsroman.
On: F.C. Sibbern · updated 2026-09-16
Brandes and Brøchner against Rasmus Nielsen, 1866–1869
A guide to the two principal philosophical attacks on Rasmus Nielsen's doctrine that faith and knowledge are absolutely heterogeneous: Georg Brandes's Dualismen i vor nyeste Philosophie (1866) and Hans Brøchner's Problemet om Tro og Viden (1868), with its sequels and Nielsen's reply. Each argument is stated as a numbered thesis and keyed to the printed pages of the texts in this collection.
On: Dualismen i vor nyeste Philosophie, Problemet om Tro og Viden, Et Svar til Professor R. Nielsen, Om det Religiøse i dets Enhed med det Humane, Om theoretisk og praktisk Erkjendelse, nogle Bemærkninger, Om „Den gode Villie“ som Magt i Videnskaben, Hr. Professor Brøchners philosophiske Kritik gjennemseet, Svar til Hr. Dr. phil. Pastor Zeuthen i Anledning af hans Sendebrev om Tro og Viden, Om Hindringer og Betingelser for det aandelige Liv i Nutiden, Samlede Skrifter, Trettende Bind (Supplementbind), Rasmus Nielsen · updated 2026-09-22
Notes on individual works
Rasmus Nielsen
Nielsen's lectures on the life of Jesus, published five months before the »Johannes Climacus« review. On the state of our edition, the unreliable errata leaf, and the book's three genuinely philosophical stretches.
On: Evangelietroen og den moderne Bevidsthed: Forelæsninger over Jesu Liv · updated 2026-08-30
A précis of Nielsen's philosophy of nature of 1873 — the longest book of his in this collection, and the only one in it that contains real mathematics — together with the state of our edition and its editorial record.
On: Natur og Aand: Bidrag til en med Physiken stemmende Naturphilosophie · updated 2026-09-12
Hans Brøchner
On the 1869 volume Brøchner promised in the preface to Problemet om Tro og Viden, and on the state of this edition, which is now complete in both languages: the letterspacing that breaks inside words, the eight places where the book's contents leaf contradicts its own heads, and the errata the author printed and we do not apply.
On: Om det Religiøse i dets Enhed med det Humane · updated 2026-09-05
Georg Brandes
On Brandes's first book, the 1866 attack on Rasmus Nielsen's doctrine of the absolute heterogeneity of faith and knowledge, and on the state of this edition — which is the first in the collection transcribed against two independent scans of two different copies, and the first whose error rate was measured rather than assumed.
On: Dualismen i vor nyeste Philosophie · updated 2026-09-20
What our edition takes from the 1903 supplementary volume of Brandes's collected works, how its text was established, and why the volume's reprint of Dualismen is left for a collation rather than transcribed again.
On: Samlede Skrifter, Trettende Bind (Supplementbind) · updated 2026-09-22
Harald Høffding
Høffding's Academy treatise on Plato's Parmenides: what it argues, where his later writings cite and correct it, and how this edition was made.
On: Bemærkninger om den platoniske Dialog Parmenides · updated 2026-10-20
On this edition of Høffding's memoirs: a diplomatic transcription of the whole 1928 first printing, how its accuracy was established, and an English translation.
On: Erindringer · updated 2026-10-07
A preview of the handwritten notes in Høffding's own copy of »Relation som Kategori«: on Bohr's atomic theory (1922, 1926) and his 1929 lecture on causal description, on Russell's theories of belief and of relations, on James, and on Kierkegaard's leap. Provisional readings with English translations.
On: Relation som Kategori (1921), Høffding's annotated copy · updated 2026-10-20
Kristian Kroman
Kroman's rejection of special relativity opened the only sustained critical discussion the theory received in Denmark. On the shape of that debate in Fysisk Tidsskrift, on Høffding's reply to it in »Relation som Kategori«, on why the article was so hard to find, and on the state of our edition: five of the seven items now stand in Danish and English.
On: »Relativitetsprincipet« · updated 2026-09-05
Niels Bohr
Twenty-five years of occasional papers, 1932–1957, including the *Discussion with Einstein* and the extension of the epistemological lesson to biology and human cultures.
On: Filosofiske Skrifter II: Atomfysik og menneskelig erkendelse · updated 2026-08-31
The essays of Bohr’s last five years, assembled by his son Aage — including the unfinished *Light and Life Revisited* and the Rutherford Memorial Lecture.
On: Filosofiske Skrifter III: Atomfysik og menneskelig erkendelse II · updated 2026-08-31
Bohr’s first collection (1929/1934): the four papers in which complementarity is first stated in print, with the introductory survey and its 1931 addendum.
On: Filosofiske Skrifter I: Atomteori og naturbeskrivelse · updated 2026-08-31
The supplementary volume: seventeen uncollected papers, among them the 1935 reply to Einstein, Podolsky and Rosen, the Faraday Lecture, and the 1950 Open Letter to the United Nations.
On: Filosofiske Skrifter IV: Supplementsbind · updated 2026-08-31