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In page Freedom of thought:

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The Sapir–Whorf hypothesis, which states that thought can be embedded in language, would support the claim that an effort to limit the use of words of language is actually a form of restricting freedom of thought.[citation needed] This was explored in George Orwell's novel 1984, with the idea of Newspeak, a stripped-down form of the English language alleged to lack the capacity for metaphor and limiting expression of original ideas.