If memory is foundation of everything and first principle (Volume 5, page 222) then what we can say about matter? We can view matter as curvature of memory (currently metaphorically) and also as a constraining “filter” device that limits (and processes) memories. The latter view of limits is similar to some theories viewing brain (body) as a constraining device for mental reality (consciousness)26.
26 Irreducible Mind (Kelly & Kelly et al.), pp. 28-29