Werner Horvath: "Kouros". Oil and acrylic on canvas, 160 x 60 cm, 2012.

A kouros  is the modern term given to those representations of male youths which first appear in the Archaic period in Greece. Kouroi are beardless, take a formulaic advancing posture, and are most often nude. At the same time when kouros-statues were created, pre-Socratic philosophy appeared in ancient Greece.  Therefore in the painting you find a deawing in the sand, illustrating a theory of Thales of Miletus, one of the main representatives of this philosophical school: the Thales' Theorem.