Sol LeWitt is regarded as a founder of both Minimal and Conceptual art. At the start of his carreer, in the early 1960's and under the influence of his colleagues Dan Flavin, Robert Mangold and Robert Ryman, he primarily made paintings and reliefs. Later in that decade he published ideas in two influential essays; “Paragraphs on Conceptual Art” (1967) and “Sentences on Conceptual Art” (1969). The first of which held the sentence that became central to Conceptual art: “The idea becomes a machine that makes the art.”

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