Not that wonder, the romance of the marvellous and mysterious, should be banished by science from reality. The philosophic mind is ever kept on its course by the desire for new worlds and new experiences, and metaphysics lures us on by the promise of a vision beyond the rim of the furthest horizon. But the
character of curiosity, the appreciation of what really is marvellous has been changed in the meantime by the discipline of science. The contemplation of the great lines of the world, the mystery of inunediate data and ultimate ends, the meaningless impetus of • creative evolution' make reality sufficiently tragic, mysterious, and questionable to the naturalist or student of culture, if he chooses to reflect upon the sum total of his knowledge and contemplate its limits. But to the mature scientific mind there can be no more thrills from the unexpected accident, no isolated sensation of a new, unrelated landscape in the exploration of reality. Every new discovery is but a step further on the same road, every new principle merely extends or shifts our old horizon.