“It can sometimes happen that, when confronted by what seems to be a wall, which one cannot get either through or round, a kind of radical reorientation is called for. Turning the whole thing over so that an approach can be made from the opposite side, as it were. If this is to succeed, it nearly always means relinquishing some cherished notion or something that you have relied on. This destructive side to creative life is essential to an artist’s survival.” – Bridget Riley, “At the End of My Pencil”