Gottfried Leibniz
Notes
Gottfried Wilhelm Leibniz (1646–1716), German polymath who invented calculus independently of Newton and set out the Principle of Sufficient Reason: that nothing happens without a reason why it is so and not otherwise. He gave the Argument from Contingency its modern form, asking why there is something rather than nothing and answering that the chain of contingent things must rest on a necessary being. He is also the source of the claim that this is the best of all possible worlds, which Voltaire mocked in Candide.
Wikipedia: https://en.wikipedia.org/wiki/Gottfried_Wilhelm_Leibniz
