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 carefully round with hobbies and
little luxuries; avoid all entanglements. Lock it up safe in the casket
or coffin of your selfishness. But in that casket, safe, dark, motionless,
airless, it will change. It will not be broken; it will become unbreakable,
impenetrable, irredeemable. The only place outside Heaven where you
can be perfectly safe from all the dangers of love is Hell.
— C. S. Lewis,
The Four Loves, chapter 6