Rudolf Steiner demonstrates how to Lay out a Virtual Plane

In 1886, the philosopher Rudolf Steiner demonstrated quite clearly what Deleuze and Guattari would later call - laying out the virtual plane, or laying out the plane of immanence.

He says -

"At this stage of observation, the world appears to our minds as an absolutely flat surface. No part of this surface rises above any other; none reveals to our minds any distinction as compared with others. Only when the spark of thinking strikes this surface, do there come to light elevations and depressions; one thing appears more of less lifted above the other, all takes on a certain sort of form, lines run out from one form to another; the whole becomes a self-sufficient harmony." p. 18 in GA 2 or 'A Theory of Knowledge Implicit in Goethe's World Conception.'