The worst failure, the deepest misery, is better than contentment with the success of earth; and seen in this light, the failures and misery of earth are actually good things, the cause of a chastened joy.

They open to us the larger light.

They suggest, and in Browning's belief they proved, that this life is but the threshold of an infinite life, that our true life is beyond, that there is an infinite of happiness, of knowledge, of love, of beauty which we shall attain.
Our failures are prophecies of eternal successes.

To choose the finite life is to miss the infinite Life! O fool, to claim the little cup of water earth's knowledge offers to thy thirst, or the beauty or love of earth, when the immeasurable waters of the Knowledge, Beauty and Love of the Eternal Paradise are thine beyond the earth.
Two things are then clear: (1) The attainment of our desires for perfection, the satisfaction of our passion for the infinite, is forbidden to us on earth by the limitations of life.

We are made imperfect; we are kept imperfect here; and we must do all our work within the limits this natural imperfection makes.