Kurt Schwitters has written, "I pasted words and sentences together into poems in such a way that their rhythmic composition created a kind of drawing. The other way around, I pasted together pictures and drawings containing sentences that demand to be read. I drove nails into pictures in such a way that besides the pictorial effect a plastic relief effect arose. I did this in order to erase the boundaries between the arts." -- Source of annotation: Marvin or Ruth Sackner.