the whole throughout and seeing each moment, as it comes, in the light not only of the past but of the future too. On this side, then, art is able, for the moment at least, and with regard to a period definitely limited by our capacities of comprehension, to master Time and give us a unity which includes its successiveness within it; so that the past, and even the future, are gathered up into the real experience of the present, and we are not only conscious of what is before our eyes, but are conscious of it as a part of the whole to which it belongs. In a similar way we notice that while different temperaments are needed for the production of different types of art, yet in appreciation all are united. For example, it would be quite impossible for the great Russian novels to be produced in any other country than Russia; it would have been quite impossible for the great German philosophy to have been produced in any other nation than Germany; it would have been quite impossible for the great English poetry to have been produced in any other nation than England. These literatures belong to the soil out of which they spring. But the people of all the other nations can appreciate them, and all are glad because they are different. And so far as the artistic side of our nature governs our whole being, it is capable of linking us together in a real fellowship, which includes and is based upon our differences and the appreciation of them, and is therefore firmly rooted, because what might have been the source of antagonism is become itself the bond of unity. But we must notice that each of these only reaches a very provisional attainment. If science likes to mark off a certain department of reality for its investigation, it can reach something like finality concerning just that department. I suppose that mechanics is something like a complete system of truth, so far as the mechanical aspect of things can be isolated from all other aspects. But then, nothing in the world is mechanical and only mechanical. Nothing in the world is chemical and only chemical. There are always other qualities there, from which abstraction has been made. Science therefore inevitably sets before itself as its goal the understanding of the universe, and it could not reach any absolute certainty concerning any real fact except so far as it had obtained omniscience. In mathematics it reaches certainty, because in mathematics the object is what it is defined to be, and nothing else. But no given material thing is just a triangle. It may even be disputed whether any given thing can be, according to the definition, a triangle at all.