Picture taken from this site
There are two self-contradictory statements at the very core of metaphysical considerations:
God is such an object which is not an object at all.
I am such an object which is not an object at all.
Every sentence could be derived from a self-contradictory sentence (the Duns Scotus law).
A metaphysician is someone who tries to play with the Absolute (God and the self are two of Its aspects), using a language, without touching the center of this playground (*).
Good luck then!
(*) I’m doing the same right now, because I’m trying to say something meaningful about these issues.