This study is concerned with Giordano Bruno’s ars memoriae and the relation between his works on mnemonics and philosophy in the first phase of his reflection (1582–1585). The hermeneutic hypothesis that will be explored is that it is Giordano Bruno’s De umbris idearum that first reveals his new elaboration of the notion of order, which will then be further unfolded in the philosophical works published in London, especially in the notions of nature, language, and praxis developed therein. The research statement is explored into more detail on a methodological level, through a discussion of Hans Blumenberg’s interpretation of Giordano Bruno, and on an analytical level, through a metaphorological interpretation of the inward writing and the shadow metaphors in the De umbris idearum.