Love is a tangible reality. Sometimes it is born of passion or devotion; sometimes it is a hard-won fruit, requiring hard work and sacrifice. Its source is unimportant. But unless we live for love, we will not be able to meet death confidently when it comes. I say this because I am certain that when our last breath is drawn and our soul meets God, we will not be asked how much we have accomplished. We will be asked whether we have loved enough. To quote John of the Cross, "In the evening of life you shall be judged on love."

http://www.plough.com/pp/books/BeNotAfraid.htm