St. Francis de Sales
Treatise on the Love of God
Book VI › Chapter XIII · Part 2 of 2
My God! Theotimus, what am I going to say? The blessed in heaven seeing that God is still more lovable than they are loving, would fail and eternally perish with a desire to love him still more, if the most holy will of God did not impose upon theirs the admirable repose which it enjoys: for they so sovereignly love this sovereign will, that its willing stays theirs, and the divine contentment contents them, they acquiescing to be limited in their love even by that will whose goodness is the object of their love. If this were not so, their love would be equally delicious and dolorous, delicious by the possession of so great a good, dolorous through an extreme desire of a greater love. God therefore continually drawing arrows, if we may say so, out of the quiver of his infinite beauty, wounds the hearts of his lovers, making them clearly see that they do not love him nearly as much as he is worthy to be beloved. That mortal who does not desire to love the divine goodness more, loves him not enough; sufficiency in this divine exercise is not sufficient, when a man would stay in it as though it sufficed him.
Source: Treatise on the Love of God (CCEL)