In this paper, I am interested in the conception of toleration that can be gleaned from the political and theological texts of Gottfried Wilhelm Leibniz. I argue that Leibniz did not defend a notion of toleration comparable to a standard modern conception. The modern conception is very often traced back to a constellation of writers contemporary with Leibniz including Locke, Bayle, and Spinoza. It involves an inclusive embrace of diversity, religious and otherwise, and an affirmation of toleration as a fundamental (...) value in and by itself, intrinsically linked to an equally fundamental imperative of freedom of expression allowing such diversity to flourish publicly. Leibniz, however, understood toleration as a political tool to be employed in order to facilitate the reunion of the Christian churches; he did not consider it a constitutive value, or a value in and by itself, but rather saw it as a means to an end; he did not establish any intrinsic link between toleration and freedom of expression but promoted moderate forms of censorship. Most importantly, however, while clearly seeing it as something positive, he also detected deep ambiguities in the concept from which we have much to learn in our own assessment of modern toleration. (shrink)

Spending six months in Rome in 1689 Gottfried Wilhelm Leibniz (1646–1716) occupied himself with the question of Copernican and Galilean censure. An established reading of the Rome papers suggests that Leibniz’s attempt to have the Copernican censure lifted was derived solely from the equivalence of hypotheses stemming from the relativity of motion; and involved Leibniz’s compromising his belief in the truth of the Copernican hypothesis by arguing that it should only be interpreted instrumentally; and that Leibniz believed in the unrestricted (...) abolition of censure. On the contrary, I argue that if hypotheses were merely equivalent, this would not provide a reason for lifting censure of Galileo, who argued that the Earth really moves and the Church was in error on this point; that Leibniz’s position in his cosmology was indeed a kind of instrumentalism, so that it did not involve any compromise; and that Leibniz is advocating a position that Galileo should be subject to censure, not because of his physics but rather because of his misinterpretation of the status of Scripture. (shrink)