Gilles Deleuze qualified Spinoza as the "prince of philosophers" for his theory of immanence, which Spinoza resumed by "Deus sive Natura" ("God or Nature"). Such a theory considers that there is no transcendent principle or external cause to the world, and that the process of life production is contained in life itself.[14] When compounded with Idealism, the immanence theory qualifies itself away from "the world" to there being no external cause to one's mind.
The French 20th-century philosopher Gilles Deleuze used the term immanence to refer to his "empiricist philosophy", which was obliged to create action and results rather than establish transcendents. His final text was titled Immanence: a life... and spoke of a plane of immanence.[18]
https://en.wikipedia.org/wiki/Immanence