"Ideas are complexes of coexistence"

From Gilles Deleuze's Difference & Repetition: "Ideas are complexes of coexistence. In a certian sense all Ideas coexist, but they do so at points, on the edges, & under glimmerings which never have the uniformity of a natural light. On each occasion, obscurities & zones of shadow correspond to their distinction. Ideas are distinuished from one another, but not all in the same manner as forms & the terms in which these are incarnated. They are objectively made & unmade according to the conditions which determine their fluent synthesis" (186-7).