varying circumstances of times and places, to other religions, polities, philosophies, as the case may be. How it stands affected towards other systems, how it affects them, how far it may be made to combine with them, how far it tolerates them, when it interferes with them, will be gradually wrought out. It will be interrogated and criticized by enemies, and defended by well-wishers. The multitude of opinions formed concerning it in these respects and many others will be collected, compared, sorted, sifted, selected, rejected, gradually attached to it, separated from it, in the minds of individuals and of the community. It will, in proportion to its native vigour and subtlety, introduce itself into the framework and details of social life, changing public opinion, and strengthening or undermining the foundations of established order. Thus in time it will have grown into an ethical code, or into a system of government, or into a theology, or into a ritual, according to its capabilities: and this body of thought, thus laboriously gained, will after all be little more than the proper representative of one idea, being in substance what that idea meant from the first, its complete image as seen in a combination of diversified aspects, with the suggestions and corrections of many minds, and the illustration of many experiences. 5. This process, whether it be longer or shorter in point of time, by which the aspects of an idea are brought into consistency and form, I call its development, being the germination and maturation of some truth or apparent truth on a large mental field. On the other hand this process will not be a development, unless the assemblage of aspects, which constitute its ultimate shape, really belongs to the idea from which they start. A republic, for instance, is not a development from a pure monarchy, though it may follow upon it; whereas the Greek "tyrant" may be considered as included in the idea of a democracy. Moreover a development will have this characteristic, that, its action being in the busy scene of human life, it cannot progress at all without cutting across, and thereby destroying or modifying and incorporating with itself existing modes of thinking and operating. The development then of an idea is not like an investigation worked out on paper, in which each successive advance is a pure evolution from a foregoing, but it is carried on through and by means of communities of men and their leaders and guides; and it employs their minds as its instruments, and depends upon them, while it uses them. And so, as regards existing opinions, principles, measures, and institutions of the community which it has invaded; it developes by establishing relations between itself and them; it employs itself, in giving them a new meaning and direction, in creating what may be called a jurisdiction over them, in throwing off whatever in them it cannot assimilate. It grows when it incorporates,