and going in its neighborhood, it might be consciously determined to different attitudes and tendencies. Such a bar of iron could never give you an outward description of the agencies that had the power of stirring it so strongly; yet of their presence, and of their significance for its life, it would be intensely aware through every fibre of its being.
It is not only the Ideas of pure Reason, as Kant styled them, that have this power of making us vitally feel presences that we are impotent articulately to describe. All sorts of higher abstractions bring with them the same kind of impalpable appeal. Remember those passages from Emerson which I read at my last lecture. The whole universe of concrete objects, as we know them, swims, not only for such a transcendentalist writer, but for all of us, in a wider and higher universe of abstract ideas, that lend it its significance. As time, space, and the ether soak through all things, so (we feel) do abstract and essential goodness, beauty, strength, significance, justice, soak through all things good, strong, significant, and just.
Such ideas, and others equally abstract, form the background for all our facts, the fountain-head of all the possibilities we conceive of. They give its 'nature,' as we call it, to every special thing. Everything we know is 'what' it is by sharing in the nature of one of these abstractions. We can never look directly at them, for they are bodiless and featureless and footless, but we grasp all other things by their means, and in handling the real world we should be stricken with helplessness in just so far forth as we might lose these mental objects, these adjectives and adverbs and predicates and heads of classification and conception.
This absolute determinability of our mind by abstrac-
