Poetic spirit

Here are two exhibitions which remind us of the richness of art, the many approaches and lines of inquiry which became available to the artist in the 20th century. Picasso, that protean genius, managed to encapsulate most of these revolutionary developments in one career and one gargantuan personality. Aubrey Williams, no slacker or shrinking violet himself, was a founder member of the Caribbean Artists Movement in the London of the 1960s, and a painter best known for his lyrical abstractions.