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

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.

Everyone has the right to walk from one end of the city to the other in secure and beautiful spaces. Everybody has the right to go by public transport. Everybody has the right to an unhampered view down their street, not full of railings, signs and rubbish.

Architecture is measured against the past, you build in the present, and try to imagine the future.

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'.

Cities are about juxtaposition.

Architecture is a slow business, and city planning even slower.