It's so easy to narrow your heart when you have had great sorrow or great disappointments. It takes a deep and courageous willingness to let it keep widening:
And whatever it is that keeps widening your heart, that's Mary, too, not only the power inside you but the love. And when you get down to it, Lily, that's the only purpose grand enough for a human life. Not just to love - but to persist in love.