Descartes's claim that the eternal truths were freely created by God is fraught with interpretive difficulties. The main arguments in the literature are classified as concerning the ontological status or the modalities of possibility and necessity of the eternal truths. The views of the principal defenders of the Creation Doctrine – Robert Desgabets, Pierre Sylvain Régis, and Antoine Le Grand are contrasted with those of Nicolas Malebranche. In clarifying the theological, ontological, and logical terms of the debate we can see (...) that what was at stake was the objectivity and certainty of the truths of mathematics and physics. I conclude by suggesting that this issue might fruitfully be used to clarify the disparate discussions in the contemporary literature. (shrink)

Robert Desgabets has been described as a ‘radical Cartesian’. Drawing conclusions from Descartes's thought that Descartes himself had failed to see, Desgabets treated Cartesianism as a work in progress that awaited further enrichment and development. But, as scholars have recognized, Desgabets's writings also betray a significant indebtedness to scholastic tradition. In presenting his philosophy, Desgabets often appeals to traditional notions, breathing new life into scholastic concepts and ideas. This paper investigates what we are to make of the scholastic vestiges in (...) Desgabets's thought. It argues that Desgabets's relation to scholastic tradition is more complicated than Desgabets himself wants us to believe, or than his modern commentators have recognized. Scholastic echoes in Desgabets cannot be taken at face value. Sometimes, they reflect basic points of agreement with scholastic theories. But just as often, scholastic formulae in Desgabets are vehicles for expressing philosophical views.. (shrink)

In 1675, Burchard de Volder (1643–1709) was the first professor to introduce the demonstration of experiment into a university physics course and built the Leiden Physics Theatre to accommodate this new pedagogy. When he requested the funds from the university to build the facility, he claimed that the performance of experiments would demonstrate the “truth and certainty” of the postulates of theoretical physics. Such a claim is interesting given de Volder’s lifelong commitment to Cartesian scientia. This chapter will examine de (...) Volder’s views on experiment and show that they are not Newtonian or inductivist, as is sometimes claimed. While de Volder thinks we need deductive reasoning from first principles to provide evidence of the certainty of the content of our physical theories, he also contends that we need experiment to provide evidence of the certainty of the existence of the particular bodies those theories discuss. This approach to experiment is based on a distinction between rational certainty and the certainty of material bodies in the actual world. While this account is deeply influenced by Descartes, it is importantly different than Descartes’ distinction between absolute and moral certainty. De Volder’s “Cartesian Empiricism” is best understood as a continuation and further development of a long tradition of teaching through observation at Leiden. (shrink)