In this last part of our book, a brief overview of all the work developed will be presented as a way of closing. The treatment of epistemological questions that History of Science raises was done by privileging the different forms and practices of constructing scientific knowledge. Like science itself and its theories, epistemology is subject to the historical limits imposed on it by its time. Any epistemological advance will only be made through advances in historical knowledge. A good History of Science must be epistemological just as good epistemology must be historical.