I work anywhere between three and 10 years on a project, depending on the size. My lifetime is finite. Therefore, I have to look carefully at how many projects I want to put into my lifetime.
I can't be bought with money. If someone calls me and asks me to work for them for three or four years, and they'll pay me well to build their vacation home, I ask myself why I should work three or four years on something like that.
I work a little bit like a sculptor. When I start, my first idea for a building is with the material. I believe architecture is about that. It's not about paper, it's not about forms. It's about space and material.