Look and learn
Bridget Riley turns 80 this year, a fact easy to forget when looking at the surging energy and contemporaneity of her pictures. She is a remarkable artist who, although imposing severe formal restraints on her work, manages continually to surprise us with the richness of her invention. Perhaps it is because of the self-limitations she endures that her imagination is compelled to delve so deeply in the narrow field she has made her own. And its very modernity is an aspect of the way her vision is directly and inspirationally linked to the art of the past. The free display in the Sunley Room at the NG, sponsored by Bloomberg,