It used to be presumed that if you weren't at your desk working, you weren't working. But we said, why can't we make a workplace where casual meetings are as important as working at your desk? Sometimes that's where your better creative work happens.

You don't restore 'The Last Supper' by filling in the missing bits - you preserve. You accept the material that has somehow survived.

I may not be the most interesting architect, but I'm still out there and have maintained some position of integrity.

Most architects work in ­studios largely divorced from academia, as if ideas, criticism and ­historical ­research were irrelevant.

I spent more than ten years working on the Neues Museum. It was a wonderful experience, an example of real collaboration between architects, conservationists, curators, client, politicians, the media, and the public. Discussions, even when difficult, were always about ideas. Ideas matter to Germans. They're a reflective people. That's attractive.

There is a danger when every building has to look spectacular; to look like it is changing the world. I don't care how a building looks if it means something, not to architects, but to the people who use it.

It used to be presumed that if you weren't at your desk working, you weren't working. But we said, why can't we make a workplace where casual meetings are as important as working at your desk? Sometimes that's where your better creative work happens.