In Matter and Memory, Bergson identifies a problem with perception and resolves it by arguing that matter is an aggregate of images. However, it is unclear whether and how Bergson justifies this thesis, and interpreters differ considerably on this question. This paper formulates and analyzes Bergson’s arguments for this thesis in Chapter 1 of Matter and Memory. Bergson presents five arguments, some of which echo arguments in early modern philosophy. They jointly compose a substantive, well-structured defense of his thesis. This (...) paper also illuminates an aspect of Bergson’s method that departs from his famous reliance on intuition and is grounded in his conception of the clarity required in philosophy. (shrink)