Since Stonehenge, architects have always been at the cutting edge of technology. And you cant separate technology from the humanistic and spiritual content of a building.

I hope that any expansion of London will learn from the planning examples of some of its most desirable areas such as Chelsea, Notting Hill, Belgravia and Mayfair. All are characterised by high density and a generosity of green spaces. They are all pedestrian-friendly with shops, entertainment, restaurants and pubs within easy walking distance.

I would never wear anything with a logo. That I really find difficult. It's a frustration that I'll find a nice shirt or something and it's got 50 prints of the logo on it - why do they do this?

You cannot separate the buildings out from the infrastructure of cites and the mobility of transit.

There's a snobbery at work in architecture. The subject is too often treated as a fine art, delicately wrapped in mumbo-jumbo. In reality, it's an all-embracing discipline taking in science, art, maths, engineering, climate, nature, politics, economics.

It takes a lot of effort to make a building look effortless.

I tend to move between turtlenecks and shirts and ties. I don't really have a uniform in the sense that some people might.