Artur Barrio- Situação P……H………….- 1969-70
" Due to a series of situations in the sector of the visual arts, regarding an increasingly frequent use of materials considered expensive in terms of our, my reality, as a socio-economic aspect of the Third World (Latin America included); due to the fact that industrialized products are out of our, my reach, and only available to an elite which I oppose, because creation can not be conditioned, it must be free (…) /I utilize perishable, inexpensive materials in my work. (…) It is clear that the simple participation of works performed with precarious materials in the closed-circle art scene arouses the opposition of that system in accordance with its current aesthetic reality. /Due to the fact that my work is conditioned by a type of transitory situation, its documentation will automatically rely on photography, film., recording, etc. − or simply on retinal or sensory recording…"
I believe this is from one of his (or only?) manifestos?