Sources

The Decline of the West, Volume 1: Form and Actuality

Oswald Spengler · Project Gutenberg (after George Allen & Unwin, 1926) · 1926

Project Gutenberg ebook 72344 verified 2026-06-22: title 'The decline of the west : Volume 1, Form and actuality', author Spengler, Oswald 1880-1936, translator Atkinson, Charles Francis 1880-1960, English, released December 6, 2023. This is the read-only source for the reading spine.

Public domain in the United States (translation published 1926; Project Gutenberg release).

The Decline of the West, Volume 2: Perspectives of World-History

Oswald Spengler · Project Gutenberg (after George Allen & Unwin, 1928) · 1928

Project Gutenberg ebook 78914 verified 2026-06-23: title 'The decline of the West, Volume 2 : Perspectives of world-history', author Spengler, Oswald 1880-1936, translator Atkinson, Charles Francis 1880-1960, English, released June 22, 2026 (credit: Sean @parchmentglow). Re-sourced from the Internet-Archive OCR (see internet-archive-decline-ii) to this clean, human-proofread edition; this is the read-only source for the Vol II reading spine.

Public domain in the United States (translation published 1928; Project Gutenberg release).

The Decline of the West, Volume 2: Perspectives of World-History

Oswald Spengler · George Allen & Unwin (Atkinson translation) · 1928

Internet Archive item declineofwest02spenuoft (Atkinson translation, Volume Two, 'Perspectives of World-History'). RETIRED as a source: Vol II was re-sourced 2026-06-22 to the clean, human-proofread Project Gutenberg edition (see gutenberg-decline-ii), which eliminated the OCR review queue entirely (ADR-0012). Kept only as a historical provenance note.

Public domain in the United States.

Man and Technics: A Contribution to a Philosophy of Life

Oswald Spengler · Alfred A. Knopf (Atkinson translation) · 1932

Internet Archive item mantechnicscontr00spen (Spengler, Oswald, 1880-1936; Atkinson translation, Knopf 1932). RETIRED as a source: the 1932 Atkinson/Knopf English translation is under US copyright until 2028, so the portal no longer publishes it. Man and Technics is now published in a fresh independent translation made from the public-domain German original (see spengler-mensch-technik-de-1931). Kept only as a historical provenance note.

Atkinson translation under US copyright until 1 Jan 2028 (published 1932, 95-year term). Not published by this portal.

Der Mensch und die Technik: Beitrag zu einer Philosophie des Lebens

Oswald Spengler · C. H. Beck'sche Verlagsbuchhandlung (Oskar Beck), München · 1931

The public-domain German original (Beck, Munich 1931), in the Vordenker 'studienTEXT' digital edition (Herbst-Edition 2009; born-digital, not a scan). This is the read-only source for the portal's fresh, independent English translation of Man and Technics, which replaces the still-copyrighted 1932 Atkinson/Knopf translation. The original 1931 Beck page numbers are carried as {N} markers in the extracted German (raw/Mensch_und_Technik_DE.txt). Spengler's own footnotes are cross-references to Der Untergang des Abendlandes and are preserved.

Public domain. Spengler died 1936; under German/EU copyright (life + 70 years) the work entered the public domain on 1 Jan 2007. Marked Public Domain Mark 1.0 at the Internet Archive. The portal's English translation is its own new work, licensed CC BY-SA 4.0.

Oswald Spengler: A Critical Estimate

H. Stuart Hughes · Charles Scribner's Sons (Twentieth Century Library) · 1952

Bibliographic record verified 2026-06-22 via the American Historical Review notice (AHR 58:4, p.869): H. Stuart Hughes, 'Oswald Spengler: A Critical Estimate' (New York: Charles Scribner's Sons, 1952, pp. ix, 176). The standard mid-century critical study of Spengler; used to attribute contested interpretations, never to assert them as fact.

Spengler after the Decline (in Prisms)

Theodor W. Adorno · MIT Press (trans. Samuel and Shierry Weber) · 1981

Bibliographic record verified 2026-06-22 (MIT Press catalogue + AbeBooks/Waterstones listings, ISBN 9780262510257): Theodor W. Adorno, 'Prisms', trans. Samuel and Shierry Weber (Cambridge, MA: MIT Press, 1981). The essay 'Spengler after the Decline' (orig. 'Spengler nach dem Untergang', 1950; based on the 1941 'Spengler Today') occupies pp. 51-72: a Frankfurt-School re-reading that grants Spengler's diagnostic power over the Civilization-phase while rejecting his fatalism. Used to attribute interpretation, never to assert.

Prophet of Decline: Spengler on World History and Politics

John Farrenkopf · Louisiana State University Press (Political Traditions in Foreign Policy) · 2001

Bibliographic record verified 2026-06-22 (American Historical Review 107:2 (2002) p.500 review; Cambridge Core review notices; Internet Archive copy; ISBN 0-8071-2653-5 / 9780807127278): John Farrenkopf, 'Prophet of Decline: Spengler on World History and Politics' (Baton Rouge: Louisiana State University Press, 2001, pp. xvii, 304). A late, full reassessment of Spengler's philosophy of world-history and politics; used for attributed scholarly interpretation.

“The Decline of the West” by Oswald Spengler

Northrop Frye · Daedalus (American Academy of Arts and Sciences) · 1974

Bibliographic record verified 2026-06-22 (JSTOR stable/20024181; hosted PDF): Northrop Frye, '“The Decline of the West” by Oswald Spengler', Daedalus 103:1 (Winter 1974), special issue 'Twentieth-Century Classics Revisited', pp. 1-13. Frye reads the book as a work of imaginative vision — 'one of the world's great Romantic poems' — rather than verifiable prediction; used for attributed scholarly interpretation.

Oswald Spengler

Encyclopædia Britannica editors · Encyclopædia Britannica

Britannica biography verified 2026-06-22: Spengler born 29 May 1880 Blankenburg, died 8 May 1936 Munich; doctorate Halle 1904; describes the Culture→Civilization life-cycle and the claim that the historian can predict the unaccomplished stages of Western history.

The Decline of the West

Encyclopædia Britannica editors · Encyclopædia Britannica

Britannica topic article for Der Untergang des Abendlandes (1918–22), confirming the German title and that the work is a comparative morphology contrasting 'Culture' and 'Civilization'.

Johann Wolfgang von Goethe

Encyclopædia Britannica editors · Encyclopædia Britannica

Britannica biography of Goethe verified 2026-06-23 (via Britannica article listing; the page is live but returns HTTP 403 to automated fetch, like the other Britannica records in this roster): German poet, playwright, novelist and scientist (born 28 Aug 1749, Frankfurt am Main; died 22 Mar 1832, Weimar), author of Faust (Part I, 1808; Part II, 1832), 'sometimes considered Germany's greatest contribution to world literature'. Used to identify Goethe as the author of Faust, the source Spengler treats as the Faustian prime-symbol's namesake.

Joachim of Fiore

Encyclopædia Britannica editors · Encyclopædia Britannica

Britannica biography of Joachim of Fiore (12th-century Italian theologian and mystic) verified 2026-06-23 (via Britannica article listing; the page is live but returns HTTP 403 to automated fetch, like the other Britannica records in this roster): documents the trinitarian philosophy of history in which the three divine Persons structure time into three status — the age of the Father (Old Testament, fear and obedience), the age of the Son (New Testament, faith), and the coming age of the Holy Spirit (love and liberty), reasoning that 'history forms an image of its creator'. Used to ground Spengler's treatment of the Joachimite three-age scheme as a Magian/Western figure of world-history; paired with scholarly-secondary works for interpretation.

The Decline of the West

Wikipedia contributors · Wikipedia, The Free Encyclopedia

Tertiary reference, coverage verified 2026-06-22: the article explicitly names and glosses Culture vs Civilization ('Civilization is what a Culture becomes once its creative impulses wane'), the Ursymbol / prime-symbol, the Faustian (infinite space), Apollinian (ahistorical, the body) and Magian (world-as-cavern) souls, pseudomorphosis, Caesarism, the Second Religiousness, the rule of money ('democracy is the political weapon of money'), blood vs money, and the Untergang ('going under … a twilight or sunset') title. Used for neutral orientation glosses, paired with scholarly-secondary works for interpretation.

Friedrich Nietzsche

Robert Wicks · Stanford Encyclopedia of Philosophy · 2022

Stanford Encyclopedia of Philosophy entry 'Friedrich Nietzsche' verified 2026-06-22 (first published 2017, substantive revision 19 May 2022); covers Nietzsche's critique of modernity, decadence, and the transvaluation of values that Spengler inherits.

Apollonian and Dionysian

Wikipedia contributors · Wikipedia, The Free Encyclopedia

Tertiary reference, coverage verified 2026-06-22: documents Nietzsche's Apollonian/Dionysian distinction from The Birth of Tragedy (1872) — Apollo as “harmony, progress, clarity, logic and the principle of individuation” (the dream/image) against Dionysus as “disorder, intoxication, emotion, ecstasy and unity”, the dissolution of individuation; Greek tragedy fuses the two. Used to ground Spengler's borrowing of the term “Apollinian” from Nietzsche.

Pythagoras

Carl Huffman · Stanford Encyclopedia of Philosophy · 2024

SEP entry 'Pythagoras' verified 2026-06-22 (first published 23 Feb 2005, substantive revision 5 Feb 2024): covers Pythagoras's association of things with number, the tetraktys, and the discovery that the musical concords answer to whole-number ratios (2:1, 3:2, 4:3) — i.e. number understood as ratio, proportion and magnitude. Used for the Classical/magnitude side of Spengler's number-chapter.

Continuity and Infinitesimals

John L. Bell · Stanford Encyclopedia of Philosophy · 2022

SEP entry 'Continuity and Infinitesimals' verified 2026-06-22 (first published 27 Jul 2005, substantive revision 16 Mar 2022): covers Newton's calculus of fluxions and Leibniz's differential and integral calculus, the reciprocity of differentiation and integration, and the function/variable/limit concepts (later made rigorous by Cauchy and Weierstrass). Used for the Western/function side of Spengler's number-chapter (number as function, the Infinitesimal).

Man and Technics

Wikipedia contributors · Wikipedia, The Free Encyclopedia

Tertiary reference, coverage verified 2026-06-22: documents the publication facts (German 'Der Mensch und die Technik', 1931; English trans. C. F. Atkinson, Alfred A. Knopf, 1932) and the book's core arguments — that Western technical achievement will become a historical curiosity, that technology spreads to 'hostile non-Western populations who will weaponize it against the West', and the closing image of the Roman soldier who 'died at his post' at Pompeii with the maxim 'Optimism is cowardice'. Used for neutral orientation glosses on Man and Technics, paired with scholarly-secondary works for interpretation.

Jean-Jacques Rousseau

Wikipedia contributors · Wikipedia, The Free Encyclopedia

Tertiary reference, coverage verified 2026-06-22: documents Rousseau's view that humans were 'fundamentally good in their natural state but became corrupted through civilization' ('nothing is so gentle as man in his primitive state … at an equal distance from the stupidity of brutes and the fatal enlightenment of civil man'), and the qualified association with the 'noble savage' idea (noting Lovejoy's argument that the attribution oversimplifies Rousseau). Used to ground Spengler's polemic against the Enlightenment picture of natural man as a gentle 'lamb of the pastures'.

The History of Utilitarianism

Julia Driver · Stanford Encyclopedia of Philosophy · 2022

SEP entry 'The History of Utilitarianism' verified 2026-06-22: covers Jeremy Bentham's principle of utility ('Actions are approved when they are such as to promote happiness, or pleasure') and J. S. Mill's 'Greatest Happiness Principle' ('actions are right in proportion as they tend to promote happiness'). Used for the Bentham/Mill 'greatest happiness' doctrine Spengler attacks; the entry does not treat Herbert Spencer's later evolutionary ethics.

Umwelt

Wikipedia contributors · Wikipedia, The Free Encyclopedia

Tertiary reference, coverage verified 2026-06-22: documents Jakob von Uexküll's concept of the 'Umwelt' — 'the specific way in which organisms of a particular species perceive and experience the world, shaped by the capabilities of their sensory organs', often translated 'self-centered world', so that organisms sharing one physical environment 'inhabit distinct perceptual realities'. Used to ground Spengler's 'world-around', which his own footnote credits to Uexküll's Biologische Weltanschauung (1913).

Faithful unto Death (painting)

Wikipedia contributors · Wikipedia, The Free Encyclopedia

Tertiary reference, coverage verified 2026-06-22: documents the motif of the Roman sentry who 'remains stoically at his post' during 'the eruption of Vesuvius in 79 AD', and that Edward Poynter's 1865 painting was 'inspired by … the 1834 novel The Last Days of Pompeii by Edward Bulwer-Lytton, in which features a sentry who remains on duty'. Used to show that Spengler's closing image in Man and Technics is a nineteenth-century literary legend, not an established archaeological fact (the structure at the Herculaneum Gate was a tomb).

Goethe, Johann Wolfgang von

Anthony K. Jensen · Internet Encyclopedia of Philosophy

Internet Encyclopedia of Philosophy entry 'Goethe, Johann Wolfgang von' by Anthony K. Jensen (Lehman College, CUNY), verified 2026-06-23: documents Goethe's morphology as the study of organic transformation, the internal 'drive to formation' (Bildungstrieb), the originary phenomenon (Urphänomen) that 'reveals itself in a constant succession of manifestations', and the rejection of static classification in favour of living, developing form. Used to ground Spengler's debt to Goethean morphology and becoming (Werden); paired with scholarly-secondary works for interpretation.

Arthur Schopenhauer

Robert Wicks · Stanford Encyclopedia of Philosophy · 2021

Stanford Encyclopedia of Philosophy entry 'Arthur Schopenhauer' by Robert Wicks, verified 2026-06-23 (first published 12 May 2003, substantive revision 9 Sep 2021): covers the world as Will — 'an endless striving and blind impulse with no end in view, devoid of knowledge' — Schopenhauer's pessimism (existence as suffering and endless frustration), and resignation/asceticism as the denial of the will-to-live ('renunciation, resignation, and will-lessness'). Used to ground Spengler's engagement with Schopenhauerian Will and pessimism; paired with scholarly-secondary works for interpretation.

Charles Darwin

Wikipedia contributors · Wikipedia, The Free Encyclopedia

Tertiary reference, coverage verified 2026-06-23: documents Darwin's theory that evolution 'resulted from a process he called natural selection, in which the struggle for existence has a similar effect to the artificial selection involved in selective breeding', his reading of Malthus ('favourable variations would tend to be preserved, and unfavourable ones to be destroyed'), and the 'struggle for existence' among wildlife. Used to ground Spengler's polemic against Darwinian natural selection / the 'struggle for existence' as an English merchant's projection onto nature; paired with scholarly-secondary works for interpretation.