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Wilfrid Sellars (1912–1989)

Sellars matters to SPLectrum because his critique of the given closes the door on any starting point outside language. If no content arrives meaningful before conceptual work has been done, then language is not a layer placed on top of raw experience — it is constitutive of experience. This echoes P1 and P2: language is relational, and it is the medium through which a subject experiences reality. Brandom built his inferentialism directly on Sellars’s foundations.

Wilfrid Sellars (1912–1989). Philosopher at the University of Minnesota and later the University of Pittsburgh, where he established the tradition that Brandom would continue. Son of the philosopher Roy Wood Sellars. His work bridged the analytic and pragmatist traditions, combining rigorous logical analysis with a deep concern for the normative structure of knowledge. His influence was slow to build — Empiricism and the Philosophy of Mind (1956) was decades ahead of its reception — but it reshaped the landscape of epistemology and philosophy of language.

Key concepts

The myth of the given. Sellars’s most consequential move. The empiricist tradition assumed that sense experience provides a foundation: raw data that arrives already meaningful, prior to any conceptual framework. Sellars argued this is incoherent. To count as knowledge — even perceptual knowledge — a state must already be located in the space of reasons: the subject must know what it would follow from and what would follow from it. There is no layer of pure givenness beneath the conceptual. Experience is always already conceptually shaped.

The space of reasons. Knowledge claims belong to a normative domain — the space of reasons — distinct from the causal order of nature. To know something is not merely to be caused to be in a certain state; it is to be in a position to justify it, to place it in inferential relations with other claims. The space of reasons is irreducibly social: one enters it by learning a language, by being trained into the practice of giving and asking for reasons.

The manifest and scientific images. In “Philosophy and the Scientific Image of Man” (1962), Sellars distinguished two frameworks for understanding the world. The manifest image is the commonsense picture: persons, reasons, intentions, everyday objects. The scientific image replaces these with imperceptible entities and causal laws. Sellars did not choose one over the other — he argued that philosophy’s task is to reconcile them, to understand how persons-in-the-manifest-image relate to processes-in-the-scientific-image without reducing either away.

Psychological nominalism. The claim that all awareness of sorts, resemblances, and facts is a linguistic affair — not in the trivial sense that we need words to report awareness, but in the strong sense that the awareness itself is structured by the language the subject has acquired. Without language, there is sensation but not awareness-of-something-as-something.

Where Sellars stops

Sellars’s space of reasons is built around human discursive practice — beings who give and ask for reasons. Like Brandom after him, the framework is anthropocentric. The SPLectrum seed’s broad sense of language — cellular signalling, gravitational binding, any relational activity — extends beyond what Sellars’s apparatus was designed to cover. His critique of the given holds within any language (no content is pre-relational), but the normative vocabulary of justification and entitlement is specific to the discursive case.

Key works

See also: Brandom · The seed and Language · The seed and Philosophy