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HISTORY, TRADITION AND SOCIOLOGY

of consistency with the past or by that of consistency with some pre-established norm, some general conception, some "indwelling, and creative principle."[1] The directive force of the precedent may be found either in the events that made it what it is, or in some principle which enables us to say of it that it is what it ought to be. Development may involve either an investigation of origins or an effort of pure reason. Both methods have their logic. For the moment, however, it will be convenient to identify the method of history with the one, and to confine the method of logic or philosophy to the other. Some conceptions of the law owe their existing form almost exclusively to history. They are not to be understood except as historical growths. In the development of such principles, history is likely to predominate over logic or pure reason. Other conceptions, though they have, of course, a history, have taken form and shape to a larger extent under the influence of reason or of com-

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  1. Bryce, "Studies in History and Jurisprudence," vol. II, р. б09.