penser in literary & formal French
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Philosophy gave this verb its most famous line.
Penser in formal French
French keeps the most quoted sentence in its philosophy: « Je pense, donc je suis » — Descartes. It is recognised universally and is still used, half seriously, in argument.
Formal writing prefers estimer or considérer where speech would use penser: « nous estimons que » in a report, « je pense que » in a café. And la pensée, the noun, carries the whole intellectual register.
💡 Focus at this level: Literary & formal
👨🏫 How to use « penser » at this level
1. Swap in « estimer » for formal writing. It signals judgement, not feeling.
2. Recognise « il pensa ». Past historic, narrative only.
3. Know the Descartes line. It is cultural literacy, not grammar.
Je pense, donc je suis.I think, therefore I am.
Nous estimons que la mesure est nécessaire.We consider the measure necessary.
Il pensa longuement avant de répondre.He thought at length before answering.
C’est une pensée juste.That is a sound thought.
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