are called forth by the ever-present thought of the Infinite and the Eternal. But this thought, if associated with a feeling of the pathos of human life does not lead Lucretius into cynicism or despair. It rather elevates him and fortifies him to suppress all personal complaint in the presence of ideas so stupendous. His imagination expands in contemplating the objects either of thought or of sight, which produce the impression of immensity,--such as the vast expanse of earth, sea and sky,--or of great duration,--such as the 'aeterni sidera mundi' or the 'validas aevi vires.' Thus, as much of the majesty of his poetry may be connected with his contemplative sense of law, much of its pervading life with his sense of the mobility of Nature, so the sublimity of many passages may be resolved into the influence of the ideas of immensity, both of time and space, on his imagination. (4) Another aspect of things vividly realised by Lucretius is that of their individuality. It was in the atomic philosophy, that the thought of 'the individual' first rose into prominence. The meaning of the word 'atom' is simply 'individual.' The sense of each separate existence is not merged in the conception of law, of change, or of the immensity of the universe. The atoms are not only infinite in number, they are also varied in kind and powerful in solid singleness,--'solida pollentia simplicitate.' From their variety and individuality the variety and individuality in Nature emerge. No two classes and no two single objects are exactly alike. Between any two of the birds that gladden the sea-shore, the river banks, or the woods, there is some difference in outward appearance-- Invenies tamen inter se differre figuris[65]. Each individual of a flock is different from every other, and by this difference only can the mother recognise her offspring. This sense of individuality intensifies the pathos of many passages in the poem. By regarding each being as having an existence of its own, the poet enters with sympathy into the feelings of all sentient existence,--of dumb animals as well as of human creatures. The freshness and distinctness of all his pictures from Nature are the result of an eye trained by his philosophy to see each thing not only as part of the universal life, but as existing in and for itself.