In the big picture, architecture is the art and science of making sure that our cities and buildings fit with the way we want to live our lives.
Sustainability can't be like some sort of a moral sacrifice or political dilemma or a philanthropical cause. It has to be a design challenge.
I believe that architecture, as anything else in life, is evolutionary. Ideas evolve; they don't come from outer space and crash into the drawing board.
My drawing skills probably froze around when I was 18... Now I'm more interested in the story, how the drawings, the layout can help express the stories and communicate them.
All evidence shows that we are actually getting smarter. Roughly we are getting 10 IQ points smarter every decade. The speed of innovation is also faster.