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| | Bertrand Russell |
 | | Russell's contributions to logic and the foundations of mathematics include his discovery of Russell's paradox, his defense of logicism (the view that mathematics is, in some significant sense, reducible to formal logic), his development of the theory of types, and his refining of the first-order predicate calculus. |
 | | Russell's response was to introduce the axiom of reducibility, an axiom that lessened the vicious circle principle's scope of application, but which many people claimed was too ad hoc to be justified philosophically. |
 | | Russell's social influence stems from three main sources: his long-standing social activism, his many writings on the social and political issues of his day, and his popularizations of technical writings in philosophy and the natural sciences. |
| plato.stanford.edu /entries/russell (3963 words) |
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