Rousseau’s stance on natural religion, revealed religion and their relation are outlined (section 1), and then his agreements and disagreements with Samuel Clarke (section 2). After a survey of Joseph Butler's critique of deism (section 3), Rousseau’s arguments emerge as capable of supplying a counter-critique sufficient to show that deism could claim to have survived the eighteenth-century undefeated (section 4). If the attempted refutation of theistic arguments on the parts of David Hume and of Immanuel Kant was inconclusive (section 5), (...) then the survival of deism up to the present turns out to represent a serious metaphysical option (section 6). (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)