The building art is man's spatial dialogue with his environment and demonstrates how he asserts himself therein and how he masters it.

The building art is, in reality, always the spatial execution of spiritual decisions. It is bound to its times and manifests itself only in addressing vital tasks with the means of its times. A knowledge of the times, its tasks, and its means is the necessary precondition of work in the building art.

Never talk to a client about architecture. Talk to him about his children. That is simply good politics. he will not understand what you have to say about architecture most of the time.

Industrialization of the building trade is a question of material. Hence the demand for a new building material is the first prerequisite.

If there really is no new way to be found, we are not afraid to stick with the old one that we found previously. So, I do not make every building different.

In 1912, when I was working in The Hague, I first saw a drawing by Louis Sullivan of one of his buildings. It interested me.