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 destroying of a beautiful discovery, the artist does not really suppress it, but rather condenses it, makes it more substantial. What comes out in the end is the result of discarded finds. Otherwise you become your own connoisseur.
Pablo PicassoWhatever the source of emotion that drives me to create, I want to give it a form which has some connection with the visible world, even if it is only to wage war on that world....I want my paintings to be able to defend themselves to resist the invader, just as though there were razor blades on all surfaces so no one could touch them without cutting his hands.
Pablo Picasso