Zurich in 1915,... While the thunder of the batteries rumbled in the distance, we pasted, we recited, we versified, we sang with all our soul. We searched for an elementary art that would, we thought, save mankind from the madness of these times.

All things, and man as well, should be like nature, without measure.

I like nature but not its substitutes... Mondrian opposed art to nature saying that art is artificial and nature is natural. I do not share this opinion... Art's origins are natural.

We do not wish to imitate nature, we do not wish to reproduce. We want to produce. We want to produce the way a plant produces its fruit, not depict. We want to produce directly, not indirectly. Since there is not a trace of abstraction in this art we call it concrete art.

Ever since my childhood, I was haunted by the search for perfection. An imperfectly cut paper literally made me ill. I would guillotine it.

Often the hands grasp more quickly than the head.

The essence of a sculpture must enter on tip-toe, as light as animal footprints on snow.