Just as when you hear a physician explaining various diseases, you understand the misery of the human frame by learning the number and the kind of sufferings it is liable to, so when you peruse the laws and read there the strange variety of crimes in marriage to which their penalties are attached, you will have a pretty accurate idea of its properties; for the law does not provide remedies for evils which do not exist, any more than a physician has a treatment for diseases which are never known.
On Virginity, Chap. 3
St. Gregory of Nyssa