We begin with a remark from Chapter 2 of What is Philosophy?, which discusses the plane of immanence. This book, of course, is by Deleuze and Guattari, but the text, in this case, clearly indicates a Deleuzian provenance: Spinoza was the philosopher who knew full well that immanence was only immanent to itself and therefore that it was a plane traversed by movements of the infinite, filled with intensive ordinates. He is therefore the prince of philosophers. Perhaps he is the only philosopher never to have compromised with transcendence and to have hunted it down everywhere. 1 Further on, Deleuze writes: Spinoza is the vertigo of immanence from which so many philosophers try in vain to escape. Will we ever be mature 1. What is Philosophy?, 48.