Abstract
Unlike many other early modern philosophers, Spinoza was not particularly troubled by scepticism. Spinoza's disdain for skeptics is backed up by remarkable epistemic confidence. Spinoza is thus concerned with at least three kinds of skeptics: with the methodological skeptic; the philosophical skeptic; with the fideist who gives epistemic priority to scripture or revelation over reason. The skeptic's recommendation to suspend one's judgment relies on a flawed metaphysical view of the thinking subject and its ideas. Spinoza has epistemological concerns about methodological skepticism. Descartes's strategy of employing methodological skepticism in order to convince his readers of the existence of certain truths is risky. Spinoza's dismissal of the skeptics is bolstered by a demanding notion of ideas as acts of understanding, which presuppose and explain the existence of their objects.