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Cover of Philosophical Investigations by Ludwig Wittgenstein

Philosophical Investigations

Ludwig Wittgenstein
— 1953 —
“
Wittgenstein's second masterpiece, which dismantles his first.

Decide its fate

The record

  • Time

    An eveningA season

    329 pages, about 7 hours: about the length of a typical book on the shelf.

  • Getting in

    Walk right inSteep climb

    Augustine’s account of learning words comes first, then a builder calling for a slab.

  • What it gives

    Plot and actionIdeas to live by

    In 12 reviews from critics and book blogs, 3 credit the plot and 11 credit the ideas or a change in how they live.

  • One of a kind

    Others do thisNothing else does

    Three writers read it against Wittgenstein’s earlier Tractatus, and Peter Hacker calls the two diametrically opposed philosophies.

The case for it

  • on the duck-rabbit

    “Wittgenstein uses perhaps the funiest example in all of philosophy, the duck-rabbit”

    five stars · a book blog
  • on the idea of language-games

    “one of the greatest advances in understanding the nature of human languages”

    Peter Hacker · Five Books, 2018
  • on the preface

    “a book written under the shadow of the destruction of a world”

    a Substack review
  • on his mistakes

    “so intense, so pure, so self-critical that even its mistakes are gifts”

    Daniel Dennett · TIME, 1999

The case against

  • on the structure

    “the book is incredibly challenging due to the lack of structure”

    a book blog
  • on his style

    “his style of writing can be a little too indirect”

    Nigel Warburton · Five Books, 2021
  • on the ambiguity

    “The ambiguity of what he writes about has scared me from treating him seriously.”

    a philosophy forum
  • on the remarks

    “some of the remarks I didn’t understand at all!”

    a philosophy forum

Time is counted from its page count. What it gives counts 12 reviews from critics and book blogs, and Getting in and One of a kind apply written rules to what reviewers report. Quotes were checked on their pages on 29 September 2026. Loved, Disliked and Staying power appear once enough readers here have finished the book.

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