Any visual activity has a good impact on the mind of man. Dance is the imitation of our own action, reaction and conviction presented in sophisticated gesticulation, exploiting the body mind and soul. These three aspects are represented in the form of Nritta, Nritya and Natya.
All aspects of artistic merits are conjured up in Natya. There is music for the musician, dance for dance lovers and drama for dramatists, beautiful line and picturesque poses for the painters and the sculptor and poetry for the poet. Bharatha describes four kinds of dramatic presentations known as Chaturvrithi in Natyasastra. They are Bharathi (expression through speech), Sathwathi (expression achieved through thinking and feeling), Kaisiki (the Lyrical, subtle movement for ladies) and Arabhati (an acrobatic, forceful movement to represent war, duels, etc.)
This is the only system of art which exploits the body, the mind and the sentiments fully and brings an absolute co-ordination between all senses. Without this absolute co-ordination it is not possible to convey the purpose of dance to the spectators. The prime aspect is literary contribution. The emotions are universal and common to all human beings. these emotions are classified into eight categories namely Sringara, Karuna, Veera, Roudra, Hasya, Bhayanaka, Bibhatsa, Abdhuta and the ninth one called Shanta or tranquility.
This quotation from the Vishnudharmottara
Purana sums up the greatness of the art form: