Ask what can be meant by “conditions of experience” and Kant’s bewildering puzzle solves itself at the word. Condition, like cause, is a term that covers a confusion between dialectical and natural connections. The conditions of experience, in the dialectical sense, are the characteristics a thing must have to deserve the name of experience; in other words, its conditions are its nominal essence. If experience be used in a loose sense to mean any given fact or consciousness in general, the condition of experience is merely immediacy. If it be used, as it often is in empirical writers, for the shock of sense, its conditions are two: a sensitive organ and an object capable of stimulating it. If finally experience be given its highest and most pregnant import and mean a fund of knowledge gathered by living, the condition of experience is intelligence. Taking the word in this last sense, Kant showed in a confused but essentially conclusive fashion that only by the application of categories to immediate data could knowledge of an ordered universe arise; or, in other language, that knowledge is a vista, that it has a perspective, since it is the presence to a given thought of a diffused and articulated landscape. The categories are the principles of interpretation by which the flat datum acquires this perspective in thought and becomes representative of a whole system of successive or collateral existences. The circumstance that experience, in the second sense, is a term reserved for what has certain natural conditions, namely, for the spark flying from the contact of stimulus and organ, led Kant to shift his point of view, and to talk half the time about conditions in the sense of natural causes or needful antecedents. Intelligence is not an antecedent of thought and knowledge but their character and logical energy. Synthesis is not a natural but only a dialectical condition of pregnant experience; it does not introduce such experience but constitutes it. Nevertheless, the whole skeleton and dialectical mould of experience came to figure, in Kant’s mythology, as machinery behind the scenes, as a system of non-natural efficient forces, as a partner in a marriage the issue of which was human thought. The idea could thus suggest itself—favoured also by remembering inopportunely the actual psychological situation—that all experience, in every sense of the word, had supernatural antecedents, and that the dialectical conditions of experience, in the highest sense, were efficient conditions of experience in the lowest. [Sidenote: Nature the true system of conditions.]