The 'Book of Lemmas' presents the outlines of an immanent and transcendent metaphysics. The latter is introduced by a survey of epistemology, in particular criticism, demarcating between valid and invalid propositions and between science and metaphysics. Immanent metaphysics does not move beyond the limitations of conceptual reason and is a heuristic of science. The ontological principal of the proposed process-ontology is the actual occasion, defined by its two state vectors: material efficiency and scalar finality (information and consciousness).