Design Principles
I think I will stick with the 10 principles of Dieter Rams:  Good design is innovative
  Good design makes a product useful
  Good design is aesthetic
  Good design makes a product understandable
  Good design is unobtrusive
  Good design is honest
  Good design is long-lasting
  Good design is thorough down to the last detail
  Good design is environmentally-friendly
  Good design is as little design as possible