9 He puts on garments of shame who desires to commit fornication, that from the lust of raiment, lewdness may enter and dwell in his heart. Make not snares of your garments for that which is openly wanton. Speak not a word in craftiness, nor dig your neighbour's well. Look not after the harlot; be not snared by the beauty of her face. She is even as the dog that is mad, yea, much more bold than it. Modesty is removed from her face, she knows not what shame is. With spitting accept her person; with reviling meet herself; with a rod pursue her like a dog, for she is like one, and to be compared with such. Reject the sweetness of her words lest you fall into her net. She empties purses and wallets, and her gains are without number. Flee from her, for she is the daughter of vipers, that she tear not in pieces your whole body.
Source: On Admonition and Repentance (New Advent)