But now sustainability is such a political category that it's getting more and more difficult to think about it in a serious way. Sustainability has become an ornament.

There's something really interesting about current urbanism: the only model is the universal model, and there is increasingly incapacity to consider the virtues and the qualities that are there, and then to build on them. The only thing is complete transformation.

People can inhabit anything. And they can be miserable in anything and ecstatic in anything. More and more I think that architecture has nothing to do with it. Of course, that's both liberating and alarming.

Let's put it this way: One can be happy or unhappy in a building. But some buildings make us more depressed than others.

The people from the suburbs are bringing along their suburban values: cleanliness, orderliness, safety - dullness, in other words. As a result, urban areas are being hollowed out. Just look at Times Square in New York. No more sex shops, no drugs, no homeless people. The area is clinically clean and incredibly dull.

The word 'celebrity' and the word 'architect' are basically incompatible.

Manhattan is an accumulation of possible disasters that never happen.