That essence in the supreme case involves existence is a thought which comes to Spinoza more easily, together with the tradition of the ordo geometricus.
Spinoza could draw upon him for the notion of genetic definition.
A fundamental contrast to the school of Bacon and of Locke is afforded by the great systems of reason, owning Cartesian inspira tion, which are identified with the names of Spinoza and Leibnitz.
We know that we need to pass from what Spinoza terms experientia y oga,' where imagination with its fragmentary apprehension is liable to error and neither necessity nor impossibility can be predicated, right up to that which fictionem terminat - namely, intellectio.
And what Spinoza has to say of the requisites of definition and the marks of intellection makes it clear that insight comes with coherence, and that the work of method on the " inductive " side is by means of the unravelling of all that makes for artificial limitation to lay bare what can then be seen to exhibit nexus in the one great system.