A book by this thinker that proposes “eternal sentences” was referenced by the title of a “metaphysical study” by Roderick Chisholm. In a paper discussing ontological commitments, this philosopher dismissed the interlocutors McX and Wyman’s positions on the existence of Pegasus. This “reluctant Platonist” used a criterion he outlined in “On What There Is” to argue, along with Hilary Putnam, for the existence of mathematical objects by appealing to their indispensability. Daniel Dennett used this thinker’s name as a verb in the title of a paper arguing against qualia. A paper by this author of Word and Object considers two versions of the (10[1])phrase “No bachelor is married” to argue (-5[1])against the analytic–synthetic distinction. For 10 points, name this American philosopher of “Two Dogmas of Empiricism.” ■END■ (0[3])