And lastly, all this and more points to philosophical Agnosticism as an artificial system, and one hopelessly inadequate to the depths of human experience. Assuredly Bossuet is right: 'man knows not the whole of anything'; and mystery, in this sense, is also of the essence of all higher religion. But what man knows of anything is that thing manifested, not essentially travestied, in that same thing's appearances. We men are most assuredly realities forming part of a real world-whole of various realities; those other realities continuously affect our own reality; we cannot help thinking certain things about these other realities; and these things, when accepted and pressed home by us in action or in science, turn out, by our success in this their utilization, to be rightly apprehended by us, as parts of interconnected, objective Nature. Thus our knowledge of Reality is real as far as it goes, and philosophical Agnosticism is a _doctrinaire_ position. We can say with Herbert Spencer, in spite of his predominant Agnosticism, that 'the error' committed by philosophers intent upon demonstrating the limits and conditions of consciousness 'consists in assuming that consciousness contains _nothing but_ limits and conditions, to the entire neglect of that which is limited and conditioned'. In reality 'there is some thing which alike forms the raw material of definite thought and remains after the definiteness, which thinking gave to it, has been destroyed'.[40] II Let us next consider five of the most ancient and extensively developed amongst the still living Religions: the Israelitish-Jewish and the Christian religions shall, as by far the best known to us and as the most fully articulated, form the great bulk of this short account; the Confucian, Buddhist, and Mohammedan religions will be taken quite briefly, only as contrasts to, or elucidations of, the characteristics found in the Jewish and Christian faiths. All this in view of the question concerning the relations between Religion and Progress. 1. We can roughly divide the Israelitish-Jewish religion into three long periods; in each the points that specially concern us will greatly vary in clearness, importance, and richness of content.