"To love at all is to be vulnerable. Love anything and your heart will be wrung or possibly broken. If you want to make sure to keeping it intact you must give it to no one, not even an animal. Wrap it carefully round with hobbies and little luxuries; avoid all entanglements. Lock it up safe in a casket or coffin of your shelfisness. But in that casket, safe, dark, motionless, airless, it will change. It will not be broken; it will be unbreakable, impenetrable, irredeemable. To love is to be vulnerable."
-C.S. Lewis, The Four Loves