It may be asked why system is necessary at all, why we should not be content with a fragmentary consciousness of the world, without attempting to gather the dispersed lights of science to one central principle. To critics like J. S. Mill, Comte's effort after system seems to be the result of an "original mental twist very common in French thinkers," of "an inordinate desire of unity." "That all perfection consists in unity, Comte apparently considers to be a maxim which no sane man thinks of questioning: it never seems to enter into his conceptions that any one could object _ad initio_, and ask, Why this universal systematizing, systematizing, systematizing? Why is it necessary that all human life should point but to one object, and be cultivated into a system of means to a single end?"[26] To this Mr. Bridges answers that unity in Comte's sense is "the first and most obvious condition which all moral and religious renovators, of whatever time or country, have by the very nature of their office set themselves to fulfil."[27] In other words, all moral and spiritual life depends upon the harmony of the individual with himself and with the world. A divided life is a life of weakness and misery, nor can life be divided intellectually, without being, or ultimately becoming, divided morally. Such unity, indeed, does not exclude--and in a being like man who is in course of development cannot altogether exclude--difference and even conflict. In the most steadily growing intellectual life there are pauses of difficulty and doubt; in the most continuous moral progress there are conflicts with self and others. But such doubts and difficulties will not greatly weaken or disturb us, so long as they are partial, so long as they do not affect the central principles of thought and action, so long as there is still some fixed faith which reaches beyond the disturbance, some certitude which is untouched by the doubt. If, however, we once lose the consciousness that there is any such principle, or if we try to rest on a principle which we at the same time feel to be inadequate, our spiritual life, in losing its unity or harmony with itself, must at the same time lose its purity and energy. It must become fitful and uncertain, the sport of accidental influences and tendencies; it must lower its moral and intellectual aims. This, in Comte's view, is what we have seen in the past. The decay of the old faiths, and of the objective synthesis based upon them, has emancipated us from many illusions, but it has, as it were, taken the inspiration out of our lives. It has made knowledge a thing for specialists who have lost the sense of totality, the sense of the value of their particular studies in relation to the whole; and it has made action feeble and wayward by depriving men of the conviction that there is any great central aim to be achieved by it. And these results would have been still more obvious, were it not that men are so slow in realizing what