The Cambridge Platonists in Philosophical Context: Politics, Metaphysics and Religion (International Archives of the History of Ideas Archives internationales d'histoire des idées, 150)

The Cambridge Platonists were defenders of tolerance in the political as well as the moral sphere ; they held that practical j u d g e m e n t came down in the last instance to individual conscience ; and they laid the foundations of our modern conceptions of conscience and liberty. But at the same time they ma intained the existence of eternal truths , and of a Good-in-itself , identical with Truth and Being, refusing to admit that freedom of conscience i m p li e d moral relativism. They were critics of dogmatism, and of the sectarian notion of "enthusiasm" as a source of illumination , on the grounds that both were disruptive of social harmony; they pleaded the cause of reason , in the hope that it could become the foundation of all human knowledge . Yet , for all that , they ma intained that a certain sort of mystical illumination lay at the heart of all true thought , and that human reason had validity only in virtue of i t s divine origin . They debated with Des cartes and took a keen interest in his mech- ism and his dualism ; they brought the atomistic theories of Democritus back into repute; and they sought to provide a detailed account of the causality link ing all phenomena.