"Our life is a short time in expectation, a time in which sadness and joy kiss each other at every moment. There is a quality of sadness that pervades all the moments of our lives. It seems that there is no such thing as a clear-cut pure joy, but that even in the most happy moments of our existence we sense a tinge of sadness.
In every satisfaction, there is an awareness of limitations. In every success, there is the fear of jealousy. Behind every smile, there is a tear. In every embrace, there is loneliness. In every friendship, distance. And in all forms of light, there is the knowledge of surrounding darkness...
But this intimate experience, in which every bit of life is touched by a bit of death, can point us beyond the limits of our existence. It can do so by making us look forward in expectation to the day when our hearts will be filled with perfect joy, a joy that no one shall take away from us."
Henri J.M. Nouwen
Making All Things New:An Invitation to the Spiritual Life
(posted in 2011 too)