recurrence in time of recognisable groups of sensations. This coherence and recurrence force the intellect, if it would master experience at all or understand anything, to frame the idea of such a reality. If we wish to defend the use of such an idea and prove to ourselves its necessity, all we need do is to point to that coherence and recurrence in external phenomena. That brave effort and flight of intelligence which in the beginning raised man to the conception of reality, enabling him to discount and interpret appearance, will, if we retain our trust in reason, raise us continually anew to that same idea, by a no less spontaneous and victorious movement of thought.
