I often told the fanatics of realism that there is no such thing as realism in art: it only exists in the mind of the observer. Art is a symbol, a thing conjuring up reality in our mental image. That is why I don't see any contradiction between abstract and figurative art either.
"Tàpies, Werke auf Papier 1943 - 2003" by Antoni Tapies, Kunsthalle Emden, edited by Achim Sommer, Altana, (p. 25), 2004.