The principal element of Suprematism in painting, as in architecture, is its liberation from all social or materialist tendencies. Through Suprematism, art comes into its pure and unpolluted form. It has acknowledged the decisive fact of the nonobjective character of sensibility. It is no longer concerned with illusion.

As quoted in Marc Chagall, – a Biography, Sidney Alexander, Cassell, London, 1978, p. 194