The back of Saint Peter's is one of the finest pieces of architecture I've ever seen.

I can't just decide myself what's being built. Someone decides what they want, then I work for them.

Liquid architecture. It's like jazz - you improvise, you work together, you play off each other, you make something, they make something. And I think it's a way of - for me, it's a way of trying to understand the city, and what might happen in the city.

I found the material that people hated the most and used the most. So, I was going and try and see if I could play with it sculpturally.

You can't ignore history; you can't escape it even if you want to. You might as well know where you come from, and you might as well know that everything has been done in some shape or form.

Time is just a blur for me. I don't know what - I don't even know where I am sometimes.

If you're serious about being an architect, you've got to learn how to take responsibility. It's not fluff. You have to do every detail on every bloody piece of the building. You have to know how the engineering works. You have to know how the fittings go together. You have to master the mechanical, electrical, acoustical - everything.