Form must never trump function. Some objects are made to look so smooth, you don't know where to pick them up or how to turn them on. If I'm designing a garlic press or cheese grater, I need my hand to fit comfortably on it. I like to know, instinctively, how to use it.

It is not how much empty space there is, but rather how it is used. It is not how much information there is, but rather how effectively it is arranged.

Throughout this book, we've been evangelizing simplicity, but ironically, the practice of simplicity is not simple. It is easy to build a bulky design by adding layer upon layer of navigation and features; it's much more difficult to create simple, graceful designs. Paring designs to essential elements while maintaining elegance and functionality requires courage and discipline.

Content precedes design. Design in the absence of content is not design, it's decoration.

I am passionate about what design can do - how far it can support the new ideas and the new ways of living of this 21st Century. Good design accelerates this exciting future where manufacturing is local, materials and processes are cradle to cradle, business models are both socially and financially driven.

Design principle: Take things away until the design breaks, then put that last thing back in.