Full Idea
Bergson was a rallying point for all the opposition, …not so much because of the theme of duration, as of the theory and practice of becoming of all kinds, of coexistent multiplicities.
Gist of Idea
Bergson was a rallying point, because he emphasised becomings and multiplicities
Source
report of Henri Bergson (Matter and Memory [1896]) by Gilles Deleuze - A Conversation: what is it? What is it for? I
Book Reference
Deleuze,Gilles: 'Dialogues II' [Continuum 2006], p.11
A Reaction
The three heroes of Deleuze are Spinoza, Nietzsche and Bergson. All philosophers are either of Being, or of Becoming, I suggest.