https://fr.wikipedia.org/wiki/John_Searle
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-John Searle, How to Derive "Ought" From "Is", The Philosophical Review, Vol. 73, No. 1 (Jan., 1964), pp. 43-58 : https://www.jstor.org/stable/2183201
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-John Searle, How to Derive "Ought" From "Is", The Philosophical Review, Vol. 73, No. 1 (Jan., 1964), pp. 43-58 : https://www.jstor.org/stable/2183201