When shopping was still connected to the street it was also an intensification and articulation of the street. Now it has become utterly independent - contained, controlled, surveyed.

I studied in London in 1968. Our school had a separate department of tropical architecture. Of course it was totally unfashionable, partly because nobody wanted to think about colonialism, but basically what you learned there was that, OK, the sun is here, so you should create natural ventilation here - an unbelievable amount of really sound principles that have been completely abandoned, so now everything is air conditioned with big machines.

Criticism per se does not worry me. I've always solicited it as part of the design process.

There is no plateau of resting or stabilising. Once you are interested in how things evolve, you have a kind of never-ending perspective, because it means you are interested in articulating the evolution, and therefore the potential change, the potential redefinition.

Why I talked about political correctness: the colonial is now such a major taboo that any achievement of the colonial period, or any generosity implied in colonialism, is again fundamentally neglected or fundamentally not recognised. That's crazy, because history is a series of layers, and you cannot say, "This layer I support and this layer I cancel." History is history and you cannot retrospectively manipulate it.

Asia is still dominated by skyscrapers. I hope that, in European cities, it will become a declining trend. They were almost never necessary.

In Lagos there's a really strong case to resurrect strong parts. Embedded in all of it are some amazing pieces of planning, amazing pieces of engineering and interaction. For instance, the campus of Lagos University is stunningly beautiful, efficient and generous, and that needs to be recognised and preserved.