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.

Architects have to become designers of eco-systems. Not just designers of beautiful facades or beautiful sculptures, but systems of economy and ecology, where we channel the flow not only of people, but also the flow of resources through our cities and buildings.

Architecture is restricted to such a limited vocabulary. A building is either a high-rise or a perimeter block or a town house.

In Copenhagen, there's a long-term commitment to creating a well-functioning pedestrian city where all forms of movement - pedestrian, bicycles, cars, public transportation - are accommodated with equal priority.

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.