Apperception

Yes, that was linked to Jung's idea of this a priori absolute knowledge.

It's perceived, I think the actual term is Aperception? Aper or aperoception? It's the idea of perceiving inwardly.

So when you think of...

Yeah, go on.

It's about how we see the world.

Apperception names a mode of encounter in which perception is not passive reception but active engagement.

The difference is subtle but decisive.

In ordinary perception, the world is simply there and the self adjusts to it.