Most known ontologies were irrational, creating their Weltanschauung by pure speculation and imposing their aprioristic views on science, ethics and logic.

A notable exception was Kant's ontology of the first enlightenment, induced from the first scientific revolution of Galileo, Descartes and Newton. Like science underlying the induction, Kant's system was axiomatic and factually falsifiable. Together with the involved science it got falsified, but that's the final destiny of every rational system and it stays as a valid milestone in the progress of human thought.

In Kant's wake, the ontology of the Second Enlightenment (SE) intends to be rational, i. e. axiomatic and derived from the second scientific revolution, to wit from the Extended Relativity.

Derivation of ontology from physics consists in identifying underlying physics ontological principles of the "physical reality". Induced from physics, the rational ontology has in turn to found physics deductively. And, indeed, for the first time in history basic ontological rules, such as Einstein's "covering principle" appear directly as axioms underlying the extended relativity, as shown below in the chapter on derivation of the General Relativity with help of the mental experiment of Rotating Disk.

Axiomatic ontology, like any axiomatic model, has to guarantee the falsifiability of its axioms. This request if automatically satisfied for axioms underlying the Extended Relativity by reduction to the latter.

However, SE ontology is more general than the foundation of physics. It is intended to complement Einstein's "PHYSICS AND REALITY", which presents it as interplay of sensations and abstractions, lacking the essential - in our opinion - imagery, indispensable to memorize, to recall and to manipulate Einstein's "physical bodies" or percepts. Einstein was mainly interested by the physical reality and restricted the mental input to sensations and percepts. Imagery, while supporting percepts, accepts as well abstract, emotional and recursive input, thus extending the "physical reality" over the entire human universe of discourse, including psyche, logic, esthetics and ethics and the "new reason", which Einstein deemed indispensable for mankind's survival, embodied in the ERN structures (chapter "ERN LOGIC").