ABSTRACT Spinoza has often been cited as a classic example of the philosophical category of ‘rationalism’; and there is indeed much about his philosophy that can seem to warrant that classification. This essay will argue that it is nonetheless a simplification, which can cloud some of the most important and interesting insights that can be gained from reading Spinoza now. Although it is true that his treatment of human knowledge emphasized the exercise of reason, his crucial—and frequently misunderstood—concept of ratio (...) was much richer and more nuanced than the common understanding of ‘rationalism’ can capture. The essay seeks to clarify Spinoza’s version of human reason, elaborating its interconnections with imagination and emotion; and its positioning within the totality of Nature. It draws on comparisons with Pascal—and on consideration of Flaubert’s responses to Spinoza’s works—to illuminate what is distinctive in Spinoza’s account of human reason. What emerges, it is argued, is important—not only for contemporary philosophy, but more broadly for the understanding of conceptual aspects of current issues associated with the status of human beings within the natural world. (shrink)