Positively as well as negatively, the sensationalists have felt themselves to represent the side of progress. In its supposed eternal character, a general notion stands ready made, fixed forever, without reference to time, without the possibility of change or diversity. As distinct from this, the sensation represents the never-failing eruption of the new. It is the novel, the unexpected, that which cannot be reasoned out in eternal formula, but must be hit upon in the ever-changing flow of our experience. It thus represents stimulation, excitation, momentum onwards. It gives a constant protest against the assumption of any theory or belief to possess finality; and it supplies the ever-renewed presentation of material out of which to build up new objects and new laws. The sensationalist appears to have a good case. He stands for vividness and definiteness against abstraction; for the engagement of the individual in experience as against the remote and general thought about experience; and for progress and for variety against the eternal fixed monotony of the concept. But what says the rationalist? What value has experience, he inquires, if it is simply a chaos of disintegrated and floating débris? What is the worth of personality and individuality when they are reduced to crudity of brute feeling and sheer intensity of impulsive reaction? What is there left in progress that we should desire it, when it has become a mere unregulated flux of transitory sensations, coming and going without reasonable motivation or rational purpose? Thus the intellectualist has endeavored to frame the structure of knowledge as a well-ordered economy, where reason is sovereign, where the permanent is the standard of reference for the changing, and where the individual may always escape from his own mere individuality and find support and reinforcement in a system of relations that lies outside of and yet gives validity to his own passing states of consciousness. Thus the rationalists hold that we must find in a universal intelligence a source of truth and guarantee of value that is sought in vain in the confused and flowing mass of sensations. The rationalist, in making the concept or general idea the all-important thing in knowledge, believes himself to be asserting the interests of order as against destructive caprice and the license of momentary whim. He finds that his cause is bound up with that of the discovery of truth as the necessary instrument and method for action. Only by reference to the general and the rational can the individual find perspective, secure direction for his appetites and impulses, and escape from the uncontrolled and ruinous reactions of his own immediate tendency.