Leibniz returned to Paris on hearing that the Elector of Mainz had died. Leibniz realised that his knowledge of mathematics was less than he would have liked so he redoubled his efforts on the subject.
Leibniz realised na ang kanyang kaalaman sa matematika ay mas mababa kaysa sa siya ay nagustuhan kaya siya redoubled kanyang mga pagsisikap sa paksa.