explanation of "the unrestricted drive to know all that there is to know about all that there is"?

Answer 1

Insatiable curiosity.

Once you get there, it's called enlightenment.

Answer 2

THE LAW OF ETERNAL UNFULFILLMENT
The Law of Eternal Unfulfillment stated that there never can be
completion or fulfillment in any moment. For if there were, there
would be no further movement; and as each moment contains
within itself all that is essential for that moment, so also each
moment contains within itself an emptiness, an unfulfillment that is essential and necessary to lead into the next moment. The Law of Eternal Unfulfillment states that every moment has something missing and is incomplete, and every moment has something that is epresent, total and complete, and when one accepts this Law of Eternal Unfulfillment, the greed-creating obsession to be fulfilled will cease to be.

I keep this on my computer to look at every once in a while... makes a lot of sense to me.