sentences:  However, the "Tractatus" theory did not appear strong enough to prove some mathematical results.Kurt Gödel in his 1944 "Russell's mathematical logic" offers in the words of his commentator Charles Parsons, "[what] might be seen as a defense of these [realist] attitudes of Russell against the reductionism prominent in his philosophy and implicit in much of his actual logical work.It was perhaps the most robust defense of realism about mathematics and its objects since the paradoxes and come to the consciousness of the mathematical world after 1900".