From: Wright, Wendy M. Francis De Sales: Introduction to the Devout Life and Treatise on the Love of God. New York: Crossroad, 1993.
“The angels on Jacob’s ladder had wings, yet nevertheless they did not fly, but went in due order up and down the steps of the ladder. The soul which rises from out of sin to a devout life has been compared to the dawn, which does not banish darkness suddenly, but by degrees. That cure which is gradually effected is always the surest; and spiritual maladies, like those of the body, are wont to come on horseback and express, while they depart slowly and on foot. So that we must needs be brave and patient, my child, in this undertaking. It is a woeful thing to see souls beginning to chafe and grow disheartened because they find themselves still subject to imperfection after having made some attempt at leading a devout life, and well-nigh yielding to the temptation to give up in despair and fall back; but, on the other hand, there is an extreme danger surrounding those souls who, through the opposite temptation, are disposed to imagine themselves purified from all imperfection at the very outset of their purgation; who count themselves as full-grown almost before they are born, and seek to fly before they have wings. Be sure, daughter, that these are in great danger of a relapse through having left their physician too soon. “It is but lost labour to rise up early and late take rest,” unless the Lord prosper all we do.”