Tem de admitir-se que é verdade que saber qualquer coisa não implica pensar nisso - mas alguém que saiba de alguma coisa não tem de ser capaz de duvi… - Ludwig Wittgenstein

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Tem de admitir-se que é verdade que saber qualquer coisa não implica pensar nisso - mas alguém que saiba de alguma coisa não tem de ser capaz de duvidar dela? E duvidar significa pensar.

Portuguese
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About Ludwig Wittgenstein

Ludwig Wittgenstein (26 April 1889 – 29 April 1951) was an Austrian-born philosopher who spent much of his life in England.

Biography information from Wikiquote

Also Known As

Native Name: Ludwig Josef Johann Wittgenstein
Alternative Names: Ludwig Joseph Johann Wittgenstein Wittgenstein
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Additional quotes by Ludwig Wittgenstein

Original German:Die Logik erfüllt die Welt; die Grenzen der Welt sind auch ihre Grenzen. Wir können also in der Logik nicht sagen: Das und das gibt es in der Welt, jenes nicht.Das würde nämlich scheinbar voraussetzen, dass wir gewisse Möglichkeiten ausschließen, und dies kann nicht der Fall sein, da sonst die Logik über die Grenzen der Welt hinaus müsste; wenn sie nämlich diese Grenzen auch von der anderen Seite betrachten könnte. Was wir nicht denken können, das können wir nicht denken; wir können also auch nicht sagen, was wir nicht denken können.

"If Ave say " Plato loves Socrates," the word " loves" which occurs between the word " Plato " and the word "Socrates" establishes a certain relation between these two words, and it is owing to this fact that our sentence is able to assert a relation between the person's name by the words " Plato " and " Socrates." " We must not say, the complex sign ' a R b' says 'a stands in a certain relation R to b' ; but we must say, that ' a' stands in a certain relation to 'b' says that a R b" (3.1432)•
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