 The concept of multiplicity has two fates in the Twentieth Century: Bergsonism and phenomenology (Deleuze, 1991, pp. 115–118). In phenomenology, the multiplicity of phenomena is always related to a unified consciousness. In Bergsonism, “the immediate data of consciousness” (les données immédiates de la conscience) are a multiplicity. Here, two prepositions, “to” and “of,” indicate perhaps the most basic difference between Bergsonism and phenomenology. Of course, this phrase is the title of Bergson’s first work, Essai sur les données immédiates de la conscience. The standard English title of this work is Time and Free Will: An Essay on the Immediate Data of Consciousness. It is the text that Sartre claimed attracted him to philosophy.