He wrote in several languages , but primarily in Latin , French , and German .
Leibniz 's contributions to this vast array of subjects were scattered in various learned journals , in tens of thousands of letters , and in unpublished manuscripts .
Leibniz wrote in several languages , but primarily in Latin , French , and German .
Leibniz 's contributions to this vast array of subjects were scattered in various learned journals , in tens of thousands of letters , and in unpublished manuscripts .