But why should sculpture thus limit itself to pure form? Because, by this limitation, it becomes a perfect medium of expression for one peculiar motive of the imaginative intellect. It therefore renounces all those attributes of its material which do not forward that motive. It has had, indeed, from the beginning an unfixed claim to colour; but this element of colour in it has always been more or less conventional, with no melting or modulation of tones, never permitting more than a very limited realism. It was maintained chiefly as a religious tradition. In proportion as the art of sculpture ceased to be merely decorative, and subordinate to architecture, it threw itself upon pure form. It renounces the power of expression by lower or heightened tones. In it, no member of the human form is more significant than the rest; the eye is wide, and without pupil; the lips and brow are hardly less significant than hands, and breasts, and feet. But the limitation of its resources is part of its pride: it has no backgrounds, no sky or atmosphere, to suggest and interpret a train of feeling; a little of suggested motion, and much of pure light on its gleaming surfaces, with pure form--only these. [213] And it gains more than it loses by this limitation to its own distinguishing motives; it unveils man in the repose of his unchanging characteristics. That white light, purged from the angry, blood-like stains of action and passion, reveals, not what is accidental in man, but the tranquil godship in him, as opposed to the restless accidents of life. The art of sculpture records the first naïve, unperplexed recognition of man by himself; and it is a proof of the high artistic capacity of the Greeks, that they apprehended and remained true to these exquisite limitations, yet, in spite of them, gave to their creations a mobile, a vital, individuality. Heiterkeit--blitheness or repose, and Allgemeinheit--generality or breadth, are, then, the supreme characteristics of the Hellenic ideal. But that generality or breadth has nothing in common with the lax observation, the unlearned thought, the flaccid execution, which have sometimes claimed superiority in art, on the plea of being "broad" or "general." Hellenic breadth and generality come of a culture minute, severe, constantly renewed, rectifying and concentrating its impressions into certain pregnant types.