Looking backward we see Descartes and Hobbes as “beginning modern philosophy,” but they thought of their own cultural role in terms of what Lecky was to call “the warfare between science and theology.” They were fighting (albeit discreetly) to make the intellectual world safe for Copernicus and Galileo. They did not think of themselves as offering “philosophical systems,” but as contributing to the efflorescence of research in mathematics and mechanics, as well as liberating intellectual life from ecclesiastical institutions. Hobbes defined “philosophy” as “such knowledge of effects of
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