-William McDonough & Michael Braungart (1992)
- Insist on human rights and sustainability.
- Recognize the interaction of design with the environment.
- Consider the social and spiritual aspects of buildings and designed objects.
- Be responsible for the effect of design decisions.
- Ensure that objects have long-term value.
- Eliminate waste and consider the entire life-cycle of designed objects.
- Make use of "natural energy flows" such as solar power and its derivatives.
- Be humble, and use nature as a model for design.
- Share knowledge, strive for continuous improvement, and encourage open communication among stakeholders.
