Ambrose of Milan, on Song 4:12

“My sister, my spouse, is a garden enclosed, a garden enclosed, a fountain sealed up.”

“Therefore, beware that the strength of your mind is not weakened by a certain union of bodily pleasure, and that everything dissolves into its embrace, and it opens the fountain, which ought to be closed and sealed by the study of intention and the consideration of reason. For a garden is closed, a fountain is sealed. For when the strength of the mind is dissolved, the senses pour forth a bodily pleasure excessively pernicious, and rush into a desire full of serious danger; which, if it had remained under the vigilant custody of a vivid mind, it would have restrained.”

Imported from an open dataset — not yet checked against the printed edition.