There are many reasons why the wheel was chosen to be the logo for the European Science Festival. The symbolic meanings of the wheel and of the circle are basically identical, with the exception that the wheel has the additional attribute of movement. The spokes of the wheel symbolically represent the rays of the sun. Identical in symbolism are also the wheel of fortune and the Taoist wheel. According to tradition, the latter does not move, but instead the whole world revolves around it. Like the circle, the wheel is a universal symbol representing omniscience, completeness, basic perfection, the self, infinity, eternity, timelessness, and ultimately God; the circle’s centre then is everywhere, and its surface is nowhere.