This article is about Otto Neurath’s infamous proposal to combat metaphysics by creating and publishing an index of prohibited words. The logic of this proposal is explicated in the frameworks of Neurath’s philosophy of science and his International Encyclopedia of Unified Science. I reconstruct two arguments within Neurath’s project to defend the proposal against criticisms from Neurath’s colleagues and against the charge that philosophers ought not be censors.

I examine the thesis that Otto Neurath anticipated the programme of naturalised epistemology already at the time of the Vienna Circle and consider the relation between Neurath's proposals and those of two contemporary theorists whose research programmes he would thus have broadly anticipated. The thesis is confirmed by reference to Neurath's own writings. The connection between Neurath's programme and the programmes of his two successors considered here, however, is found to be highly indirect in one case and nonexistent in the (...) other — despite their undeniable overlap. (shrink)

L'induction géneralisante et l'induction extrapolante : leur usage dans l'empirisme logique. La formation des théories et leur contrôle dépendent de la forme du langage. Dans l'empirisme scientifique, les prévisions, appropriées au contrôle, sont : 1° inductivement fondées et pratiquement contrôlables ; 2° ou bien inductivement fondées et pratiquement incontrôlables ; 3° ou bien non fondées inductivement et pratiquement contrôlables ; 4° ou bien non fondées inductivement et pratiquement incontrôlables. Nous ne disposons pas de règles générales d’induction ou de contrôle ; (...) l’évolution des sciences montre que nous ne pouvons être assurés d’avance de ce qui pourra nous soutenir ou nous ébranler dans l’acceptation ou le rejet des théories ou hypothèses. (shrink)