Some other bloggers (AGENT SWARM and Time’s Flow Stemmed, for example) have been been ruminating over this beautiful string of sentences from Deleuze and Guattari’s What Is Philosophy?:

Thinking provokes general indifference. It is a dangerous exercise nevertheless. Indeed, it is only when the dangers become obvious that indifference ceases, but they often remain hidden and barely perceptible inherent in the enterprise. Precisely because the plane of immanence is prephilosophical and does not immediately take effect with concepts, it implies a sort of groping experimentation and its layout resorts to measures that are not very respectable, rational, or reasonable. These measures belong to the order of dreams, of pathological processes, esoteric experiences, drunkenness, and excess. We head for the horizon, on the plane of immanence, and we return with bloodshot eyes, yet they are the eyes of the mind. Even Descartes had his dream. To think is always to follow the witch’s flight.

So the movement is one from the transcendent to the horizontal? No, it can’t be that simple…

What moderns lost in verticality for their thought they gained in fact by the invention of the spaceship. The transcendental has not been replaced by the horizontal; rather, the horizontal has been brought to its completion in a noöspheric earth, a “transcendental star,” as Sloterdijk calls it: “A star on which the theory of stars appeared, the earth shines with self-generated phosphorescence” (p. 25, In the World Interior of Capital).

Endeavour_STS-130_Earth_Limb

Horizontality, so long as we conceive of it as a going and a return, shares an essentially circular structure with verticality. Its just transcendentalism with more speed, with escape velocity. Still, whether Platonist or Humean, we ascend and descend, we travel far away and we come back home again. Sure, sometimes we get bored and give up. Sometimes we are blinded by the light on approach. Other times we die on the way back (and what unimaginable lines of flight might draw us then?). But if there is a flat plane before philosophy, there must be a curved sphere after it.

Were we to take flight toward the fading sun at the precise rate of earth’s counter-rotation, time would appear to cease and we would feel as though we needed no sleep. But when we finally came down from our magic flight, our friends back on solid ground would see the dreamlessness in our eyes. Though their subjectivity is nothing like the chains of common sense, even sorcerers are subject to the grip of gravity. Earth holds us all.

I am more inclined to bear the cross of horizontal heavens with transcendental planes than I am to let one tip the other over on its side…

The transcendental and the horizontal meet in the terrestrial.