SYNTHESIS aims to promote an interchange among those scholars who are engaged with both a rigorous historical method and a theoretical approach. Indeed, a serious philosophical investigation cannot confine itself to either of them: in order to deeply understand any philosophical text a theoretical research is required and, vice versa, a theoretical inquiry that fails to recognize the historical import of the text is unable to reflect its philosophical message. The underlying assumption is that the historical approach is not to be reduced to a mere antiquarian method just as much as the theoretical one is not to be treated as no more than a logical analysis. Therefore, the challenge is to explore philosophical questions and issues by assuming both a synchronic and a diachronic point of view, thus taking into consideration their historical development as much as their significance for the ongoing debates.