I travel to the Middle East, I travel to China, I travel to Europe. It's all very rewarding - the only problem is the travel is getting more and more difficult for me now. Ten years ago I would have enjoyed it a lot more.

At home, I have a wife, fortunately, and my children are all grown, and I have many grandchildren. I spend weekends with my grandchildren; I adore them.

Be the best, not necessarily the original.

I travel to the Middle East, I travel to China, I travel to Europe. It's all very rewarding - the only problem is the travel is getting more and more difficult for me now. Ten years ago I would have enjoyed it a lot more.

I haven't taken any new projects in the past years - I told myself, if I cannot live long enough to finish it, I don't want it.

I cannot work and listen to Wagner at the same time, nor Mahler, nor Beethoven's late quartets. I enjoy listening to Chopin's piano music when I work.

For Kips Bay, I had a wonderful client, William Zeckendorf, who was willing to gamble with me on using concrete and not brick for a high-rise apartment building. That was very innovative at the time.