Abstract
While Peirce presented himself as a "scholastic realist of a somewhat extreme stripe", merely adapting the virtues involved in Scotism to the requirements of modern science to erect a plain scientific realistic metaphysics, he was also eager to emphasize that "everybody ought to be a nominalist at first" because such an hypothesis is "simpler than realism" and because "the economy of research prescribes to try the simpler one first, and to continue in that opinion", until one "is driven out of it by the force majeure of irreconciliable facts". Even if, at first, he had been "blinded by nominalistic preconceptions", he also confessed that he had "never been able to think differently on that question of realism" and...