Shape shifter

Henry Moore
Tate Britain, until 8 August

Even some of the greatest artists go in and out of fashion, though market forces are grimly determined (in the short term) that this should not be so. Death often brings a lull in interest, or conversely a revival. An artist who has been overrated may be for a time forgotten, until someone starts the process of reassessment and perhaps a more balanced appraisal is reached.