On Certainty
Über Gewissheit — Wittgenstein's last notebooks, on the foundations of empirical knowledge
Tradition: Analytic philosophy / late-late Wittgenstein
The foundations of empirical knowledge lie in our forms of life — and our framework certainties cannot themselves be doubted within the system that depends on them
On Certainty is Wittgenstein's last sustained work, composed in the eighteen months between his cancer diagnosis and his death in April 1951. The 676 numbered remarks engage Moore's "Proof of an External World" and "A Defence of Common Sense" — the famous demonstrations that begin "Here is a hand." Wittgenstein argues that Moore's certainties (that there is an external world, that I have hands, that the earth has existed for many years) are not themselves empirical knowledge but the framework against which empirical questions are raised — "hinges" that must stay put if questioning is to occur at all. The work is the third Wittgenstein author-stage (alongside the Tractatus and the Investigations) and has shaped contemporary epistemology decisively (especially Wright's and Williams's anti-sceptical work).
Author
Editions cited
- On Certainty (Denis Paul & G. E. M. Anscombe, Blackwell/Harper, 1969)
School Embodiments
On Certainty's analysis of framework certainties as practical hinges of inquiry rather than theoretical propositions has been read by neo-pragmatists (Rorty, Brandom) as a pragmatist text in disguise.
"You must bear in mind that the language-game is so to say something unpredictable. I mean: it is not based on grounds. It is not reasonable (or unreasonable). It is there — like our life." (On Certainty §559)
On Certainty remains within the analytic tradition's engagement with epistemological foundations, even as it transforms what "foundation" means.
"Knowledge is in the end based on acknowledgement." (On Certainty §378)
Wittgenstein's response to scepticism — that the sceptic's doubt cannot be coherently formulated within the language-game it presupposes — is a sophisticated modern resolution of the Pyrrhonian challenge.
"My life consists in my being content to accept many things." (On Certainty §344)
The doctrine that our framework certainties are constituted by our forms of life rather than discovered is a sophisticated constructivist epistemology.
"If something happened (such as someone's telling me something) calculated to make me doubtful of my own name, there would certainly also be something that made the grounds of these doubts themselves seem doubtful." (On Certainty §516)
Late Wittgenstein's attention to the lived practical certainties of everyday life resembles phenomenological analyses of the life-world.
"My life shews that I know or am certain that there is a chair over there." (On Certainty §7)
On Certainty's analysis of certainty as embedded in language-games and forms of life is a relational epistemology rather than a foundationalist one.
"The propositions describing this world-picture might be part of a kind of mythology." (On Certainty §95)
Postmodernist epistemology has read On Certainty alongside Rorty as foundational for anti-foundationalist accounts of knowledge.
"It is so difficult to find the beginning. Or, better: it is difficult to begin at the beginning. And not try to go further back." (On Certainty §471)
Reformed epistemology (Plantinga, Wolterstorff) has engaged On Certainty as support for the doctrine that basic beliefs (including religious belief) need not be evidentially grounded to be rational.
"At the foundation of well-founded belief lies belief that is not founded." (On Certainty §253)
Analytic-philosophical tradition.
Internal Tensions
On Certainty represents a third Wittgenstein author-stage — distinct from both Tractatus and Investigations. The three-stage trajectory is now classifiable on this site as a compare-triple. The work's relation to the Investigations has been disputed: continuation, refinement, or substantive new direction.
I. Time
Hinge certainties stand fast across temporal questioning. Time is real, relational, embedded in our practices.
Attributes
II. Space
Standard everyday space; not theorised philosophically.
Attributes
III. Matter
Real material objects are part of our framework certainties — "Here is a hand."
Attributes
IV. Observer
The On-Certainty observer is the embodied human whose certainties are embedded in forms of life — plural, active in practice. No metaphysical agency.
Attributes
V. Energy
Not engaged.
Attributes
VI. Information
Framework certainties are the relational hinges of inquiry. No personal-conservation commitment.
Attributes
Personas that cite this work
Personas with the nearest attribute fingerprint
Historical figures whose own classification on the same six-dimensional grid lands closest to this work's. Computed by attribute-agreement on coordinates both address.
Computed school proximity
The work's attribute fingerprint scored against all schools using the same quiz scorer. Useful as a sanity check on the hand-curated embodiments above.
How On Certainty resolves each dilemma
51 resolved positions across 4 dimensions, including 19 distinctive where the majority of schools go the other way · 6 unaligned.
Each dimension is sorted so minority positions come first. Mainstream positions are folded into an expandable list.
Time · 9 dilemmas · 3 distinctive
Persistence, the future, and the direction of becoming.
6 mainstream positions
Matter · 7 dilemmas · 5 distinctive
What stuff is — fundamental, relational, or appearance.
Observer · 37 dilemmas · 5 distinctive
Mind, agency, and the knower's relation to the known.