We feel that the next movement will involve the right hand straining to its full extent the sling, dragging the stone away, and whirling it into the air; when, after it has sped to strike Goliath in the forehead, the whole lithe body of the lad will have described a curve, and recovered its perpendicular position on the two firm legs.

Michelangelo invariably chose some decisive moment; in the action he had to represent; and though he was working here under difficulties, owing to the limitations of the damaged block at his disposal, he contrived to suggest the imminence of swift and sudden energy which shall disturb the equilibrium of his young giant's pose.

Critics of this statue, deceived by its superficial resemblance to some Greek athletes at rest, have neglected the candid realism of the momentary act foreshadowed.

They do not understand the meaning of the sling.

Even Heath Wilson, for instance, writes: "The massive shoulders are thrown back, the right arm is pendent, and _the right hand grasps resolutely the stone_ with which the adversary is to be slain." This entirely falsifies the sculptor's motive, misses the meaning of the sling, renders the broad strap behind the back superfluous, and changes into mere plastic symbolism what Michelangelo intended to be a moment caught from palpitating life.
It has often been remarked that David's head is modelled upon the type of Donatello's S.George at Orsanmichele.