[§ 2. Nor for separate study of ideas of power.]
Ideas of power, in the same way, cannot be completely viewed as a separate class; not because they are mean or unimportant, but because they are almost always associated with, or dependent upon, some of the higher ideas of truth, beauty, or relation, rendered with decision or velocity. That power which delights us in the chalk sketch of a great painter is not one of the fingers, not like that of the writing-master, mere dexterity of hand. It is the accuracy and certainty of the knowledge, rendered evident by its rapid and fearless expression, which is the real source of pleasure; and so upon each difficulty of art, whether it be to know, or to relate, or to invent, the sensation of power is attendant, when we see that difficulty totally and swiftly vanquished. Hence, as we determine what is otherwise desirable in art, we shall gradually develop the sources of the ideas of power; and if there be anything difficult which is not otherwise desirable, it must be afterwards considered separately.
[§ 3. Except under one particular form.]
But it will be necessary at present to notice a particular form of the ideas of power, which is partially independent of knowledge of truth, or difficulty, and which is apt to corrupt the judgment of the critic, and debase the work of the artist. It is evident that the conception of power which we receive from a calculation of unseen difficulty, and an estimate of unseen strength, can never be so impressive as that which we receive from the present sensation or sight of the one resisting, and the other overwhelming. In the one case the power is imagined, and in the other felt.
[§ 4. There are two modes of receiving ideas of power, commonly inconsistent.]
There are thus two modes in which we receive the conception of power; one, the most just, when by a perfect knowledge of the difficulty to be overcome, and the means employed, we form a right estimate of the faculties exerted; the other, when without possessing such intimate and accurate knowledge, we are impressed by a sensation of power in visible action. If these two modes of receiving the impression agree in the result, and if the sensation be equal to the estimate, we receive the utmost possible idea of power. But this is the case perhaps with the works of only one man out of the whole circle of the fathers of art, of him to whom we have just referred, Michael Angelo. In others, the estimate and the sensation are constantly unequal, and often contradictory.
[§ 5. First reason of the inconsistency.]
The first reason of this inconsistency is, that in order to receive a sensation of power, we must see it in operation. Its victory, therefore, must not be achieved, but achieving, and therefore imperfect. Thus we receive a greater sensation of power from the half-hewn limbs of the Twilight to the Day of the Cappella de' Medici, than even from the divine inebriety of the Bacchus in the gallery—greater from the life dashed out along the Friezes of the Parthenon, than from the polished limbs of the Apollo,—greater from the ink sketch of the head of Raffaelle's St. Catherine, than from the perfection of its realization.
[§ 6. Second reason for the inconsistency.]
Another reason of the inconsistency is, that the sensation of power is in proportion to the apparent inadequacy of the means to the end; so that the impression is much greater from a partial success attained with slight effort, than from perfect success attained with greater proportional effort. Now, in all art, every touch or effort does individually less in proportion as the work approaches perfection. The first five chalk touches bring a head into existence out of nothing. No five touches in the whole course of the work will ever do so much as these, and the difference made by each touch is more and more imperceptible as the work approaches completion. Consequently, the ratio between the means employed and the effect produced is constantly decreasing, and therefore the least sensation of power is received from the most perfect work.