Architecture is a vehicle for life. In order to cater life, a mixture different elements are needed. For it to sustain itself and the city, it should have a mixture of different spaces, inhabited by different kinds people. One cannot make a new substance out of the same substance. Life, ecosystems, are compounds.
A sustainable building is a building for everyone. It should be mixed-used: a place to work, to rest and to have fun. It should adapt to environmental and spatial changes, but has the form that suggests permanence. It should be a compact roofed city. A building without boundaries. Architecture, urban design and landscape as one narrative.
Nature possesses characteristic, as part of its system, for us to build upon. Porosity and permeability will allow ecosystems to be part of architecture. A porous object tends to admit substances. This characteristic, porosity, if applied to a building, will allow the elements like light, wind, water, into its being. These elements are the sources of life. When integrated with architecture, the structure can be a birthplace of a new ecosystem, consisting of healthy beings, conscientiously and visually aware of the environment.
The structure will have the character of a stone: porous yet dense. It can stand the test of time.