Twins in mythology upon. However, other cultures attribute the outcome of twins to superior virility of the father. In various mythologies, twins often represent the dualistic nature of the universe. In Greek mythology, twins Apollo and Artemis, are the sun god and moon goddess, respectively. Similar forms of higher beings are reflected throughout different mythologies, as twin brothers Kuat and Iae represent the sun and moon in the Xingu mythology of Brazil. Egyptian God, Geb, and his twin sister, Nut, represented the binary nature of the world, with Geb being the God of the Earth, and Nut being the Goddess of the sky.
Apollo in the Forge of Vulcan the painter Peter Paul Rubens who had also visited Spain in 1629. Velázquez painted two large canvases in the house of the Spanish ambassador. These two canvases formed a pair and were brought back to Spain with his luggage: "Joseph's Tunic" and "Apollo in the Forge of Vulcan". The subject is taken from Roman mythology, specifically from Ovid's "Metamorphoses". Velázquez interpreted the scene into a strictly human version, with contemporary figures. Apollo is seen wearing a toga which leaves his torso exposed to view. Vulcan, in this picture, is just a blacksmith, as are his helpers, who are men from