Deleuze and Guattari: What is a concept?

There are no simple concepts. Every concept has components and is defined by them. It therefore has a combination [chiffre*]. It is a multiplicity, although not every multiplicity is conceptual. There is no concept with only one component. Even the first concept, the one with which a philosophy "begins," has several components, because it is not obvious that philosophy must have a beginning, and if it does determine one, it must combine it with a point of view or a ground [une
raison]. Not only do Descartes, Hegel, and Feuerbach not begin with the same concept, they do not have the same concept of beginning. Every concept is at least double or triple, etc. Neither is there a concept possessing every component, since this would be chaos pure and simple.
Even so-called universals as ultimate concepts must escape the chaos by circumscribing a universe that explains them (contemplation, reflection,
communication).