To love at all is to be vunerable.
certainly be wrung and possibly be broken. If you want to make sure of
keeping it intact, you must give your heart to no one, not even to an
animal. Wrap it carefully round with hobbies and little luxuries; avoid
all entanglements; lock it up safe in the casket or coffin or 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, Harcourt, Brace & World, Inc., 1960, p.169.