"The major task of the twentieth century will be to explore the unconscious, to investigate the subsoil of the mind"
About this Quote
The intent is strategic. Bergson is positioning philosophy against the era’s reigning prestige industries: industrial engineering, positivist science, and the bureaucratic faith that everything important can be measured. By insisting on the unconscious as the century’s central project, he asserts that the self is not transparent to itself, that rational consciousness is a thin crust over a messy, formative underlayer. That move both flatters and threatens modern readers: you are complicated, and you are not in charge.
The context is the early twentieth-century scramble to professionalize the inner life. Freud is turning dreams and slips into evidence; psychiatry is consolidating institutions; modernist art is treating the psyche as a collage of impulses rather than a coherent narrator. Bergson, often cast as the philosopher of duration and lived experience, anticipates that the culture’s big breakthroughs will come from taking those “buried” forces seriously.
The subtext is also political. If the unconscious drives behavior, then mass persuasion, propaganda, and consumer desire become technologies aimed at the subsoil. The quote reads, now, less like a prediction than a warning about what happens once excavation tools exist.
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Citation Formats
APA Style (7th ed.)
Bergson, Henri. (2026, January 17). The major task of the twentieth century will be to explore the unconscious, to investigate the subsoil of the mind. FixQuotes. https://fixquotes.com/quotes/the-major-task-of-the-twentieth-century-will-be-24115/
Chicago Style
Bergson, Henri. "The major task of the twentieth century will be to explore the unconscious, to investigate the subsoil of the mind." FixQuotes. January 17, 2026. https://fixquotes.com/quotes/the-major-task-of-the-twentieth-century-will-be-24115/.
MLA Style (9th ed.)
"The major task of the twentieth century will be to explore the unconscious, to investigate the subsoil of the mind." FixQuotes, 17 Jan. 2026, https://fixquotes.com/quotes/the-major-task-of-the-twentieth-century-will-be-24115/. Accessed 18 Feb. 2026.




