Kazimir Malevich (1878-1935) - the famous Russian avant-garde artist, art theorist, philosopher, founder of suprematism - one of the earliest manifestations of abstract art of modern times. His "Black Square" is a challenge to traditional painting and one of the most mysterious paintings of the early 20th century. The artist argued: "The purpose of art is not to depict any objects. The purpose of art is to free itself from objects that do not make up its essence, and to be art that exists in itself."