Martin Buber

Martin Buber (in I and Thou) puts it this way:

You know always in your heart that you need God more than everything; but do you not know that God needs you -- in the fullness of His eternity needs you? How would humanity be, how would you be, if God did not need humanity, did not need you? You need God, in order to be -- and God needs you, for the very meaning of your life. ... There is divine meaning in the life of the world, of human persons, of you and me.

 http://www.sarahlaughed.net/sermons/trinity/