The Philosophical Works of Leibnitz Author:Gottfried Wilhelm Leibniz, George Martin Duncan 1908. Comprising The Monadology, New System of Nature, Principles of Nature and of Grace, Letters to Clarke, Refutation of Spinoza, and his other important philosophical opuscules, together with the Abridgment of the Theodicy and extracts from the New Essays on Human Understanding. Translated from the original Latin and French. With notes by G... more »eorge Martin Duncan.« less