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 (10[1])positions on the existence of Pegasus. This “reluctant Platonist” used a criterion he outlined in “On What There Is” to argue, (10[1])along with Hilary Putnam, for the existence of mathematical objects (10[1])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 (10[2])considers two versions of the phrase “No bachelor is married” to argue against the analytic–synthetic distinction. For 10 points, name this American philosopher of “Two Dogmas (10[1])of Empiricism.” (10[1])■END■ (0[2])