There is a test you can apply to almost any major work of Western philosophy: draw its structure. What shape does it have? Almost invariably, the answer is a tree. There is a root, a first principle, an axiom, a foundation, a ground. From this root grows a trunk, the main argument, the central claim. From the trunk branch the subsidiary claims, the applications, the demonstrations, the elaborations. From the branches grow leaves, specific examples, qualifications, details. The whole structure is unified, hierarchical, and rooted in a single origin.
Plateau 1 of A Thousand Plateaus (1980), the opening section of Gilles Deleuze and Félix Guattari's most important joint work, opens with a frontal assault on this structure. The tree, they argue, is not just a shape that books happen to take. It is the model that Western thought uses to organize knowledge, power, and reality itself. The tree model says: everything has a root, a single origin, a foundation. Everything derives from and refers back to this root. Knowledge is organized hierarchically, with foundational disciplines at the base and applied disciplines above. Identity is rooted in an original self, a subject, a unified consciousness. Political power flows from a central source (the sovereign, the state, the party). Language derives from a grammar, a deep structure, a generative root.
Deleuze and Guattari say: what if the world is not a tree? What if the appropriate model is not a root-trunk-branch-leaf structure but a rhizome?
A rhizome, they are using the botanical term, is a root system like that of grass, ginger, or iris. It grows horizontally and in all directions simultaneously. It has no single origin and no center. You can enter it from any point and move in any direction. Cut it off anywhere and it will regenerate. Add to it anywhere and it will absorb the addition. It has no beginning, no end, no trunk, no crown. It is multiplicity without unity, connection without hierarchy, growth without origin.
This is not just a metaphor for a different kind of book (though A Thousand Plateaus is itself written as a rhizome, its fifteen chapters are called "plateaus" and are explicitly designed to be read in any order, entered at any point). It is a metaphor for a different ontology: a way of understanding reality, knowledge, and power that does not require a foundation, a center, or a unified origin.
The contrast they draw most sharply is between the root-book (a classical philosophical text with a single founding argument that everything else derives from) and the rhizome-book (a text with multiple entry points, multiple trajectories, no hierarchy of claims, no single truth it is trying to establish). Most books are secretly or explicitly trees. A Thousand Plateaus is an attempt to write an actual rhizome, which is part of why it is notoriously difficult to read in a linear sequence, that difficulty is intentional, not a failure.
Gilles Deleuze (1925–1995) was among the most original French philosophers of the 20th century, a deeply rigorous thinker who wrote transformative works on Hume, Nietzsche, Kant, Bergson. and Spinoza before developing his own philosophy of difference Félix Guattari (1930–1992) was a political activist and radical psychoanalyst who worked at the experimental La Borde clinic and was involved in the student uprisings of May 1968. Their collaboration produced two volumes of Capitalism and Schizophrenia: Anti-Oedipus (1972) and A Thousand Plateaus (1980). Together they are among the most provocative, difficult, and generative thinkers of the poststructuralist moment, and among the most frequently appropriated, misread, and reduced to slogans.
Quick reflection
Think about the last complex idea you encountered — in a book, an argument, a conversation. How did you structure it in your mind to understand it? Did you look for the main claim and then organize everything else in relation to it (tree thinking)? Or did you move around in it, connecting it to other things from multiple directions without a fixed center (rhizome thinking)? What would it mean to genuinely think rhizomatically — to approach an idea without looking for its trunk?