But we are surrounded by limitations which baffle and retard our growth.

That is miserable, but not so much as we think; for the failures these limitations cause prevent us--and this is a main point in Browning's view--from being content with our condition on the earth.

There is that within us which is always endeavouring to transcend those limitations, and which believes in their final dispersal.

This aspiration rises to something higher than any possible actual on earth.
It is never worn out; it is the divine in us; and when it seems to decay, God renews it by spiritual influences from without and within, coming to us from nature as seen by us, from humanity as felt by us, and from himself who dwells in us.
But then, unless we find out and submit to those limitations, and work within them, life is useless, so far as any life is useless.

But while we work within them, we see beyond them an illimitable land, and thirst for it.