I and you have one life and one chance to make it count for something meaningful. Humanity and the earth needs us to do whatever we can to make a positive difference. By aligning our life and our businesses with sustainability principles we will be able to protect the planet and ensure that all people enjoy peace and prosperity.
There is a deeper point to be made here, however, having to do with the specificity of everything. One of the great failings of our culture is the nearly universal belief that there can be anything universal. We as a culture take the same approach to living in Phoenix as in Seattle as in Miami, to the detriment of all these landscapes. We turn wild trees to standardized two-by-fours. We turn living fish into fish sticks. But every fish is different from every other fish. Every student is different from every other student. Every place is different from every other place. If we are ever to hope to begin to live sustainably in place (which is the only way to live sustainably), we will have to remember specificity is everything.
What is now called 'green architecture' is an opportunistic caricature of a much deeper consideration of the issues related to sustainability that architecture has been engaged with for many years. It was one of the first professions that was deeply concerned with these issues and that had an intellectual response to them.