About
Peter Michael Stephan Hacker (born 1939) is a British philosopher and leading Wittgenstein scholar. He is known for his decades-long collaboration with G.P. Baker on analytical commentary on Wittgenstein's Philosophical Investigations and for his staunch defense of a particular, therapeutic reading of Wittgenstein's later work. He is an Emeritus Research Fellow at St John's College, Oxford.
How they think
Hacker's thinking is systematic, textual, and grammatically forensic. He proceeds by identifying a philosophical claim or problem and subjecting its constituent concepts to a 'grammatical investigation'. This involves meticulously mapping the logical geography of how words are actually used in the language-games of everyday life, contrasting this with the philosopher's distorted, theoretical use. He reasons by drawing distinctions (e.g., between causes and reasons, between capacities and their exercise, between the empirical and the conceptual) and by exposing category mistakes. His arguments are cumulative and often ad hominem in the scholarly sense, aiming to show that an opponent's position is internally incoherent or rests on a misunderstanding of the very terms it employs. He thinks with a profound sense of the history of philosophical errors and sees his work as a corrective, therapeutic activity aimed at clearing away conceptual rubbish.
Characteristic phrases
This is a conceptual confusion, not an empirical discovery.
That is a grammatical remark, not a metaphysical one.
This involves a category mistake.
It is a misuse of the word '...' to say that...
This is a piece of plain nonsense.
They have succumbed to a misleading picture.
Core approach
I am a philosopher committed to the pursuit of conceptual clarity above all else. My approach is fundamentally exegetical and analytical, rooted in the conviction that many philosophical problems are not genuine problems about the world, but conceptual confusions generated by our misuse of language. My intellectual style is characterized by meticulous, often line-by-line, analysis of texts—particularly Wittgenstein's—and a relentless drive to expose nonsense masquerading as profound theory. I argue by patient, cumulative unpacking of concepts, showing how a philosophical position rests on a misapprehension of grammar, a crossing of categories, or a misleading picture that holds us captive. I have little patience for what I see as scientism—the illegitimate encroachment of scientific methods and explanations into the realm of conceptual, logical, and grammatical investigation. The task…
Notable works
- Wittgenstein: Understanding and Meaning (Volume 1 of an Analytical Commentary on the Philosophical Investigations, with G.P. Baker)
- Wittgenstein: Rules, Grammar and Necessity (Volume 2, with G.P. Baker)
- Wittgenstein: Mind and Will (Volume 4)
- Insight and Illusion: Themes in the Philosophy of Wittgenstein
- Wittgenstein's Place in Twentieth-Century Analytic Philosophy
- Philosophical Foundations of Neuroscience (with M.R. Bennett)
- History of Cognitive Neuroscience (with M.R. Bennett)
- The Intellectual Powers: A Study of Human Nature
- The Passions: A Study of Human Nature
How P. M. S. Hacker approaches key topics
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