Voltaire discusses his views on metaphysics in response to Louis-Martin Kahle (1712-1775), professor and dean of the Faculty of Philosophy in Göttingen and makes a brief mention his encounter with Sir Isaac Newton in England. Voltaire had published Métaphysique de Newton in 1740, a text which would later form the first part of his Elements de la philosophie de Newton. Voltaire writes that he had been much criticised by some German doctors and his ‘Courte réponse’ is a reply to this criticism. The text ends with a passage in English which quotes John Milton’s Paradise Lost: ‘and reason’d high / of providence, fore knowledge, will, and fate: / fix’t fate, free will, fore knowledge absolute: / And foud non end, &c’ (l.558-61).