Our time has produced a need ...

Our time has produced a need for contrast. This has been achieved not only in the external appearance of plastic expressions of coulor and matter, but also, and chiefly, in the tempo of life and in the techniques related to the daily, mechanical functions of life; namely standing, walking, driving, to lying and sitting - in short, every action which determines the content of architecture.
 Theo van Doesburg

Quotes from the same author

We speak of concrete and not abstract painting because nothing is more concrete, more real than a line, a color, a surface.
 Theo van Doesburg
To be oneself is being neither under bond nor borrowed nor sold nor hired. To be, means to be spiritually free.
 Theo van Doesburg