A.W. Tozer once wrote, "The widest thing in the universe is not space; it is the potential capacity of the human heart. Being made in the image of God, it is capable of almost unlimited extension in all directions. And one of the world's worst tragedies is that we allow our hearts to shrink until there is room in them for little besides ourselves. Of all persons, Christians should have the largest hearts. All things else being equal, our prayers are only as powerful as our lives."