The Eidos and the Apriori

Abstract

Obscure invariants can emerge and be directly grasped in serious or fictive perceiving or recollecting and then clarified through free variation. There are formal and material eidē or universal essences, the former originally constituted in activity and the latter in primary passivity. Ideal as well as real individuals exemplify them. The evidence of eidē performed by the ego is called “ideation” and can be reflective as well as straightforward. Eidē are atemporal and unchanging and they can be transcendental as well as in the natural attitude. They are also apodictic, but still can be obscure and inadequate. And there can be truths about them.