"I have worked these past days with Dutron at Saint-Paul and have become more and more aware of the richness and new horizons that your process brings to printmaking. Never has one had materials with equal power. As far as I am concerned, I can express myself without a single hindrance, at a single burst of spirit, of line without being paralyzed nor slowed down by an outmoded technique that might risk distorting the free expression, purity and freshness of the final result."
- Joan Miró, writing to Henri Goetz (painter and engraver) in 1968, praising the results of his newly developed printing technique using carborundum and synthetic resins