The wisdom that comes from recollected prayer and colloquy. Edith Stein, as Sr Teresa Benedicta of the Cross, from The Science of the Cross:
The peace God produces in the spirit through the dryness of the sensory being is “spiritual and most precious” and its “fruit is quiet, delicate, solitary, satisfying, and peaceful, and far removed from all earlier gratifications which were more palpable and sensory.” So one understands that only the dying of the sensory being is felt and nothing is experienced of the beginning of the new life that is concealed beneath it.
It is no exaggeration when we call the suffering of the souls in this state a crucifixion. In their inability to make use of their own faculties they are as though nailed fast. And to the dryness is added the torment of fear that they are on the wrong path. “The live in the belief that they will have no more spiritual blessing and that God has abandoned them.” Then they strive to act in the former manner, but as unable to achieve anything and only disturb the peace that God is working in them.
They should do absolutely nothing other than “perservere patiently in prayer without any activity whatsoever; all that is required of them here is freedom of soul, that they liberate themselves from the impediment and fatigue of ideas and thoughts, and care not about thinking and meditating. They must be content simply with a loving and peaceful attentiveness to God, and live without the concern, without the effort, and without the desire to taste or feel him.” Instead of doing this, because they lack competent guidance, they strive in vain, and possibly plague themselves with the thought that they are only wasting time with their prayer and ought to give it up.
Were they to remain peacefully surrendered to this dark contemplation they would soon experience what the second line of the song of the Night calls the inflaming love. “For contemplation is nothing else than a secret and peaceful loving inflow of God, which, if not hampered, fires the soul in the spirit of love.”