On September 11, the murders of World Trade Center employees and visitors took the lives of numerous nationalities, ethnic groups and religious followers.

Every year, I am conscious of the anniversary of my 1974 World Trade Center walk.

When I designed my loft, I literally framed the World Trade Center as a picture postcard I could see from my bed. I no longer have that image, and I mourn it.

On 11 September, I was living in Greenwich Village, New York; my children learned to tell south from north by looking at the World Trade Center.

Our current identification system is so disjointed that the World Trade Center terrorists had a total of 63 valid driver's licenses between them.

The World Trade Center was for me not only out of scale vertically, but it was also out of scale in plan. It occupied several blocks that were all massed together.