My son posted this on his blog yesterday, had to share it. 

St. Cyril of Jerusalem (4th Century)

  “And why did He call the grace of the Spirit water? Because by water all things subsist; because water brings forth grass and living things; because the water of the showers comes down from heaven; because it comes down one in form, but works in many forms. For one fountain waters the whole of Paradise, and one and the same rain comes down upon all the world, yet it becomes white in the lily, and red in the rose, and purple in violets and hyacinths, and different and varied in each several kind: so it is one in the palm-tree, and another in the vine, and all in all things; and yet is one in nature, not diverse from itself; for the rain does not change itself, and come down first as one thing, then as another, but adapting itself to the constitution of each thing which receives it, it becomes to each what is suitable. “