To mark his centenary, the Guggenheim Museum has assembled a retrospective of Piet Mondrian, the father of asymmetrical design.

In the photographs that survive from his last years, Piet Mondrian’s own head began to verge on geometrical abstraction. The domed skull had its remaining hair brushed flat, each strand meticulously parallel to its neighbor; the two neat creases on the pale forehead; the paired circles of his spectacle…