He is believed to be the founder of Conceptual art with both his writing and art pieces. Conceptual art or conceptualism is a form of art where ideas and concepts are more important than materialistic and aesthetic values surrounding the artwork. This was based on the discovery of the importance of the idea or concept of a work even if not physically acted on. If an artist created a design, and planned it out, and the idea is carried out to the visible product, all the steps are uniquely important. These steps or instructions are significant part in the strategy of developing a conceptual art piece.
*The incomplete open cube was a piece that he started on in the 1970’s. This piece was an essential part of his artistic image throughout his career as an artist. LeWitt’s conceptual mind questioned the number of variations that could be created when an open cube is systematically taken apart in parts. LeWitt worked on the cube for months, painstakingly taking it apart, bit-by-bit. By removing one edge from an open cube, then two edges, and so on, as an exploration of how many variations of an incomplete open cube exist and what they look like. One key constraint was that the remaining edges had to be joined.
He would then rejoin all the pieces and repeat the whole artistic process over again. He came up with 122 variations of incomplete open cubes.
*LeWitt also build floor structures