The affirmation of a human law must ultimately rest on the perception of a something that is set above the flux upon which the flux itself depends--on what Aristotle terms an unmoved mover. Otherwise conscience becomes a part of the very flux and element of change it is supposed to control. In proportion as he escapes from outer control man must be conscious of some such unmoved mover if he is to oppose a definite aim or purpose to the indefinite expansion of his desires. Having some such firm centre he may hope to carry through to a fortunate conclusion the “civil war in the cave.” He may, as the wise are wont to express it, build himself an island in the midst of the flood. The romantic moralist, on the other hand, instead of building himself an island is simply drifting with the stream. For feeling not only shifts from man to man, it is continually shifting in the same man; so that morality becomes a matter of mood, and romanticism here as elsewhere might be defined as the despotism of mood. At the time of doing anything, says Mrs. Shelley, Shelley deemed himself right; and Rousseau says that in the act of abandoning his own children he felt “like a member of Plato’s republic.” The man who makes self-expression and not self-control his primary endeavor becomes subject to every influence, “the very slave of circumstance and impulse borne by every breath.”[105] This is what it means in practice no longer to keep a firm hand on the rudder of one’s personality, but to turn one’s self over to “nature.” The partisan of expression becomes the thrall of his impressions so that the whole Rousseauistic conception may be termed indifferently impressionistic or expressionistic. For the beautiful soul in order to express himself has to indulge his emotions instead of hardening and bracing them against the shock of circumstance. The very refinement of sensibility which constitutes in his own eyes his superiority to the philistine makes him quiver responsive to every outer influence; he finally becomes subject to changes in the weather, or in Rousseau’s own phrase, the “vile plaything of the atmosphere and seasons.”