In the second art, namely sculpture, which seems to be a further development on painting, we can see all the details of the contours or the shape of the form, from all sides. The nature of the form is now complete in all aspects. But the form being static, there is a dearth of life in it, as it were. Movement is indicative of a form being really animate. For a graceful movement, there should be some regulation or discipline of motion, which is called rhythm.
Dancing is thus a further development on sculpture.
It is full of life with rhythmical movements of the limbs and expression of emotions in the face. At this stage ideas begin to crystallise in the mind. Then they seek their expression. Words flow out. But there should also be some regulation and aptness in the word-structure, in order to properly express one s ideas.