It is kind of insatiable.

It does have to be affordable.

You must have been consumed with insatiable greed.

An inexhaustible GOD is the only answer to an insatiable hunger

The avarice of mankind is insatiable

Now, here is the point about the self: it is insatiable. It is always, always hankering. It is what you might call rapacious to a fault. The great flaming mouth to the thing is never in this world going to be stuff full.