Every transfinite consistent multiplicity, that is, every transfinite set, must have a definite aleph as its cardinal number.
My theory stands as firm as a rock; every arrow directed against it will quickly return to the archer. How do I know this? Because I have studied it from all sides for many years; because I have examined all objections which have ever been made against the infinite numbers; and above all because I have followed its roots, so to speak, to the first infallible cause of all created things.
that there are levels of infinity
I guess he didn't know everything after all...