of anything but the perfection of the few, the conclusion is alike inevitable: he had failed miserably to trace to their historical causes both the cultural barrenness of Sparta and the astounding fertility of his own Athens. Had Aristotle lived in the commonwealth of Plato's _Laws_, he must have suffered the same fate that Socrates suffered in Athens. For, though far from ungrateful to his teacher, he was not a docile pupil. By birth he was a Stagirite, by experience a citizen of the world. He did not, like Plato, form his youthful impressions in a milieu that was poisoned with bitterness at a demoralized democracy. The Athens to which he came as a lad of seventeen was still a democracy, and a very unhealthy one at that, and for it he had little liking; but his was a more dispassionate nature than was Plato's. He was not a great historian.[54] _That_ the discovery in Egypt in 1890 of one of his many lost historical works has proven clearly; but he was a very learned man, and perhaps came to as close a comprehension of earlier Greek history as was possible for a political philosopher who had nothing to guide him but the unscientific methods then in vogue for investigating the past. By its very nature science is objective. It is not inhuman, but it is deliberately impersonal. In this respect it contrasts sharply with the arts. The greatest artist may be the man who embodies in his verse or stone or colors moods and thoughts which must be in "widest commonalty spread," but which constitute in the aggregate his own self or soul. History is of course a science, but not one of the common type. Unlike the ordinary scientist, the scientific historian has to practice, not self-suppression, but self-expansion. He must become conscious, so far as that is possible, of the prejudices and special interests of his own age, and, divested of them, he must migrate into a strange land in order to bring back thence a report that is at once an unbiased account of what he has seen and a story that is comprehensible to his fellow-citizens, or, at least, to his fellow-historians. He dare not treat the past as one in spirit with the present, or as resolvable into precisely the same factors. He must be alive to the existence of many different pasts leading to the present in no pre-determinable succession, much less progression. The points must make a line, but the line may be of any conceivable curve. Aristotle was far from arriving at a full appreciation of the difficulties of historical inquiry; but, unlike Plato, he took infinite pains to acquire historical knowledge.