Love anything and your heart will be wrung and possibly broken. If you want to make sure of keeping it intact, you must give it to no one, not even an animal. Wrap it round with hobbies and luxuries; avoid all entanglements. Lock it up safely in the casket of your selfishness. But in that casket, safe, dark, motionless and airless, it will change. It will not be broken, it will become unbreakable, impenetratable, irredeemable. To love is to be vulnerable.
~CS Lewis