Obviously, the intention was not to go back to images traditionally valued as worthy or holy images and shapes, but exactly the opposite; its main purpose had to be, to realise as sacred art anything which so far had been regarded as of little value and pitiful.
"Tàpies, Werke auf Papier 1943 - 2003" by Antoni Tapies, Kunsthalle Emden, edited by Achim Sommer, Altana, (p. 38), 2004.