Book 7, Chapter 14,Treatise on the Love of God:
“In the sacred Virgin, everything favored and seconded the course of heavenly love; its progress and increase were incomparably greater than in all other creatures, yet a progress infinitely sweet, peaceful and tranquil. No, she swooned not away, either with love or with compassion, by the cross of her Son, although she then experienced the most ardent and painful attack of love that can be imagined: for although the attack was extreme, yet, at the same time, it was at once equally strong and gentle, mighty and tranquil, active and peaceful, consisting in a heat which was sharp but sweet.”