Each one of these bodies [art-works which Arp made] certainly signifies something, but it is only once there is nothing left for me to change that I … - Jean Arp

I did exhibitions with the Surrealists [in Paris, c. 1929] because their attitude revolted against 'art' and their attitude toward life itself was wise, as was Dada's.

Then we went down to his work room, in the horrible beautiful Merz grotto [the 'Merz-Haus', built by Kurt Schwitters, where broken wheels paired with matchboxes, wire lattices with brushes without bristles, rusted wheels with curious Merz cucumbers.. .How often did we 'p-lay' in this room! Schwitters called playing, considering the sweat, working. There we glued together our paper pictures, and as I tossed away one of my glued-together works one morning, Schwitters asked, 'You don't like it? Can I have it?' – 'What do you want with this failed piece of toast?' Schwitters took a good look at it and said, 'I'll put what's on top on the bottom, I'll stick a little Merz nose in this corner and I'll sign the bottom Kurt Schwitters.' And, yes indeed, this collage became a wonderful picture by Kurt Schwitters. Schwitters was a wizard, just as Hokusai was a wizard.

We do not wish to copy nature. We do not want to reproduce, we want to produce. We want to produce as a plant produces a fruit and does not itself reproduce. We want to produce directly and without meditation. As there is not the least trace of abstraction in this art, we will call it concrete art.