Metaphor and analogy
The Indian sculptors developed their forms by various means, most of which were particular cultural inventions. But what were the forms themselves? If we regard the stone as parallel to the mouthed sounds of speech, contour and recession as parallel to words, the forms represent the basic units of expression in sculpture. What is the meaning of forms like these? How do they convey their extraordinary sense of quality?
The general forms of Indian sculpture refer not to a class-system, which is a special intellectual development in its own right, but-rather, by association to an ambience of instances, rationalized only as first- degree universals.  Tradition has always been at pains to preserve these in the forefront of the Indian artistic consciousness. What appears to the Western reader of Indian literature as a repetitiveness of imagery-lotus, mountain of silver, lion voice, for example-has always been an essential process in preserving India's special type of art.
Here, of course, we run directly up against the whole question of the analogical structure of form.  Indian texts, like the Pratimamanalakshanam and the Vishnudharmottaram, make it quite clear that an Indian sculptor, when he was forming something which was recognizably part of a human body, like a leg, hand, lip or eye, should make it the shape of some other thing, and thus attribute to it a metaphor- the plastic version, as it were, of the poetic 'her eyes shone from the heaven of her face'. An analogy of this sort, extended into a ramified structure by means of ambiguity and amphiboly, forms the life blood of poetry. We may therefore expect to find the same principle at work in the forms of art. The Apsarases of Khajuraho are given eyes which, following the texts, we can recognize as fish-shaped. Indian poetry prepares us to understand this with its stock epithet for the eyes of a pretty girl, namely 'silver fishes'. This apprehension of the quick, flickering glances of a long-eyed girl-like fish in a dark pool-is clearly meant to be offered to the spectator's mind in the plastic image no less than in the poetic context.
Exactly this same process is described, and poetical analogies are suggested, for many other parts of the body. The trunk of an elephant for the shoulder and arm, or for the hip and thigh; the bill of a parrot-the bird of love-for the high, elegant Aryan nose; the lower petal of a Sesame flower for the lower lip; the strong double curve of the bow for the expressive eyebrows, and so on. This process of formal suggestion is conveyed by the actual inflexions of the surfaces of the conventional sense-units out of which the figure is composed.  The forms are thus made capable of transmitting an emotional charge. It may seem strange that virtually the same 'situations' were continuously repeated throughout the history of Indian art. However, as in all the other Indian arts, music no less than poetry, this was in fact the case. The situations were constant, though their expression was given different contexts and varied detail in its development. Indian art has always ploughed a narrow furrow, long and deep.
The 'meaning' of forms is thus seen to reside in their suggestions of similar evocative forms seen and remembered from other contexts. The forms in question are not merely the strict geometrical forms of analysis but refer directly back to particular referents in real experience.  They willl therefore have a 'poetic significance' quite distinct from the prose sense of straightforward analysis and far more powerful in its emotional effects.
This contrast between forms of feeling and forms of analysis is an important one in the whole of art, and can be very clearly seen in a comparison, say, between Indian or Mexican sculpture and the art of later classical Europe. Forms of feeling, particularly in a craft context, generally speaking are laid out in broader units, and their often deceptively bland or general finish can lead the eye to believe that the forms are simple or even crude.  However, as forms they have always this reference outside themselves to a nexus of associated cultural experiences, which are not themselves referred to in the work of art, taken at its descriptive level.