In
1979, his first chalk drawings on the black paper pasted
over expired advertisements appeared in New York City's
subway stations, which led to his discovery through the
art market. The themes of Haring's artwork became richer
during the 1980s, without there ever being a development
in his work in the usual sense. His simple comic-like stroke
and never-ending outline make the figures, animals and objects
merge into an indissoluble pattern. The artist portrays
both omnipresent medial images and older art motifs in an
obsessively charged and sexual pictorial language. From
around the middle of the 80s, he particularly dedicated
himself to colored steel sculptures, considered as figurative
shorthand for his pictures. He most liked to see them in
parks and children's playgrounds.