"When you begin a picture, you often make some pretty discoveries. You must be on guard against these.  Destroy the thing, do it over several times. In each destorying of a beautiful discovery , the artist does not really suppress it, but rather transforms it, condenses it, make it more substational. What comes out in the end is the result of discarded finds. Otherwise, you become your own connoisseur. I sell myself nothing" 

--Pablo Picasso