Between 18 - 21 November 1676, Leibniz met personally with [[Benedict de Spinoza]] discussing various philosophical topics, including the ontological argument for the existence of God.<ref>http://plato.stanford.edu/entries/leibniz/</ref> | Between 18 - 21 November 1676, Leibniz met personally with [[Benedict de Spinoza]] discussing various philosophical topics, including the ontological argument for the existence of God.<ref>http://plato.stanford.edu/entries/leibniz/</ref> |