I'm just saying that there are high quality materials, and when we change them then there should be a way of changing them so that you can celebrate that change - rather than just 'mix it up'.

Sustainable development: Meeting present needs without compromising the stock of natural resources remaining for future generations. In terms of buildings, it implies resource efficiency, minimum energy use, flexibility and long life

As an artist, what do you think the biggest mistake you can make is? My vote for the biggest mistake is being afraid of making mistakes.

Today is much more an age of greed

It is my belief that exciting things happen when a variety of overlapping activities designed for all people-the old and the young, the blue and white collar, the local inhabitant and the visitor, different activities for different occasions-meet in a flexible environment, opening up the possibility of interaction outside the confines of institutional limits. When this takes place, deprived areas welcome dynamic places for those who live, work and visit; places where all can participate, rather than less or more beautiful ghettos.

I'm just saying that there are high quality materials, and when we change them then there should be a way of changing them so that you can celebrate that change - rather than just 'mix it up'.

In Florence, classical buildings sit against medieval buildings. It's that contrast we like.