Winning the competition for Frankfurt's Museum of Applied Art in '79 opened the door to a number of projects in Europe, especially as we were invited to join many design competitions.

You can't escape the influence of architectural history.

Architecture which enters into a symbiosis with light does not merely create form in light, by day and at night, but allow light to become form.

One of the real challenges, since we're working in so many places - Mexico, Japan, Brazil - is understanding variations, both in terms of culture and context.

We think about project's public nature and how that can be enhanced, how the spaces we create can enliven the experience of being there.

When I think of a place of worship, I think of a place where one can sit and be reminded of all the things that are important outside our individual lives. To express spirituality, the architect has to think of the original material of architecture, space and light.

It's important to understand differences in scale and environment.