In loving thou dost well, in passion not,
Wherein true Love consists not; love refines
The thoughts, and heart enlarges, hath his seat
In Reason, and is judicious, is the scale
By which to heav’nly Love thou maist ascend,
Not sunk in carnal pleasure, for which cause
Among the Beasts no Mate for thee was found.
~ Milton, Paradise Lost. Book 8 (588-594).