It is not the word that is the original material of poetry, rather the letter.
Word is:
1. Composition of letters
2. Sounds
3. Description (meaning)
4. Vehicle for idea associations
Art is uninterpretable, unending; material must be unequivocal in a consistent formation.

In: 'Consistent Poetry Art', Schwitters' contribution to 'Magazine G', No. 3, 1924, ed. Hans Richter.