Too much clarity is the death of art.

Three unrelated quotations from artists on the subject of the creative process...

Visual artist Tina Martel.

“If you’re making a piece of work, you are going through the process, and you’ve already decided what it will be at the end of it, then why are you doing it? It’s done! You don’t need to do it. It’s finished. Go on. Move on.”
From http://www.artofthepeace.ca/magazine/11.

Actor Daniel Day-Lewis.

“In talking a character through, you define it. And if you define it, you kill it dead.” 

From http://www.imdb.com/name/nm0000358/bio.

Musician, Bono.

“I think art is an attempt to identify yourself. If you’re sure of who you are in the world, there’s no reason to try to find out.”

From U2 by U2, page 67.