Chicago Sun-Times

By Roger Ebert
An extraordinary thriller... The film centers on two remarkable performances, by Gwyneth Paltrow and Hope Davis.
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Boston Globe

By Ty Burr
Proof is proof that you can drain most of the juice out of a play and still have an enjoyable night at the movies.
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Philadelphia Inquirer

By Carrie Rickey
Once you get past that golden swag and curtain of hair, Paltrow's performance is devastating, cutting to the pith and marrow of parent-child relations. The other actors in this stagebound movie fare less well.
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USA Today

By Claudia Puig
Proof proves undeniably that the intimacy of a stage play can be re-created powerfully on screen.
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The Hollywood Reporter

By Kirk Honeycutt
Gwyneth Paltrow is triumphant in this somewhat derivative and overly stage-bound film.
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Entertainment Weekly

By Owen Gleiberman
In Proof, Paltrow plays yet another young woman who is being gnawed at by termites of instability, only this time out, her performance, rather than startling, is merely competent: earnest and overly familiar.
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New York Daily News

By Jami Bernard
Who knew a drama about numbers could be so thrilling?
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San Francisco Chronicle

By Mick LaSalle
A goopy Gwyneth Paltrow movie.
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Rolling Stone

By Peter Travers
Madden directed Paltrow in the play on the London stage, but he does his "Shakespeare in Love" goddess no favors by filling the screen with big close-ups that betray the theatrical origins of the piece and drain the movie of life and urgency. Proof hasn't been filmed at all -- it's been embalmed.
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Wall Street Journal

By Joe Morgenstern
I wish I could report the arrival of an impressive movie, but this one, for all its ostensibly big ideas about mathematics and wounded minds, struck me as an elaborate pretext for a synthetic love story.
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64 out of 100
Generally favorable reviews
Metascore® based on all critic reviews. Scores range from 0 to 100, with higher scores indicating more favorable reviews.