Sol LeWitt, Two Open Modular Cubes/Half-Off, 1972
"In 1982 the artist wrote, ‘the most interesting characteristic of the cube is that it is relatively uninteresting. It is best used as a basic unit for any more elaborate function, the grammatical device from which the work may proceed.’ This sculpture is one of a group on the same scale, beginning with a single cube and using it as a building block or module in various combinations. This is the key example of the ‘half-off’ sculptures, where the cubes abut along half of one side instead of being aligned. The series includes works with three half-off cubes and with five half-off cubes alternately projecting and receding in a zig-zag. There are potentially many additions to the basic form."