10 Whether you read or write, whether you wake or sleep, let the herdsman's horn of Amos always ring in your ears. Let the sound of the clarion arouse your soul, let the divine love carry you out of yourself; and then seek upon your bed him whom your soul loves, and boldly say: “I sleep, but my heart wakes.” And when you have found him and taken hold of him, let him not go. And if you fall asleep for a moment and He escapes from your hands, do not immediately despair.
Go out into the streets and charge the daughters of Jerusalem: then shall you find him lying down in the noontide weary and drunk with passion, or wet with the dew of night by the flocks of his companions, or fragrant with many kinds of spices, amid the apples of the garden. There give to him your breasts, let him suck your learned bosom, let him rest in the midst of his heritage, his feathers as those of a dove overlaid with silver and his inward parts with the brightness of gold. This young child, this mere boy, who is fed on butter and honey, and who is reared among curdled mountains, quickly grows up to manhood, speedily spoils all that is opposed to him in you, and when the time is ripe plunders [the spiritual] Damascus and puts in chains the king of [the spiritual] Assyria.
Source: Letters (New Advent)