You ever notice that a circle has no end? It just keeps going and going and going. Still, it is a whole lot less complex to grab onto then a sphere.
Infinity is such a mind blowing concept. Normal white bread world minds generally cannot grasp it.
Western minds wants everything to be squares because square is a concept that is easy to grasp, clear cut hard edges, nice hard angles, manly stuff.
But circles and spheres have no hard edges, have no clear cut beginning, have no definitive end. They look soft and smooth.
Squares are masculine and easy to grasp and therefore make folk feel secure. No secrets in a square.
circles and spheres are feminine and therefore mysterious and intriguing and scary for most folks to attempt to fathom.
The only time that most folks come even close to grasping the power of a sphere is when they ar looking at tits and ass