133 Thus, _J. Tucker_ thinks that religion, the state and commerce, are only the parts of one same general plan: no institution, therefore, can be called appropriate, within the limits of the province of any one of these, if it be clearly in opposition to the other two, because the harmony of God’s work can not be broken up. (Four Tracts and two Sermons on political and commercial Subjects, 1774, Serm. I.) _ 134 Riedel_ (National Œkonomie, 1838, I, p. 178 seq.), gives a good illustration of the difference between the manner in which law and Political Economy look at the same question. The law (to avoid strife, or to settle controversies) looks upon the debtor as the owner of the capital, and lets him run all the risk; Political Economy, on the other hand, looking deeper into the nature of the contract, reaches an entirely opposite result. The mere jurist has a dangerous tendency to undervalue the reign of the laws of nature; the mere political economist, just as readily, undervalues the element of free will. (_Arnold_, Cultur und Recht I, 97.) In this respect, the two sciences complement each other very well. _Roesler_ (_Hildebrand’s_ Jahrb., 1868, II, and 1869, I.) shows, and he does not exaggerate the fact, that political economists have made altogether too little use of the results of the science of law. 135 Jurists will always experience the want of divesting their isolated ideas of their purely accidental character, by grouping them together in such a manner as to make them constitute a complete and independent whole. One must be possessed of profound knowledge to perceive their necessary connection from an historico-juridical point of view. Political Economy, with its characteristic accuracy and practical utility, can best take its place, at the present time. It is in the greater number of legal questions, the systematically elaborated science of “the nature of the thing.” See the able beginnings of a policy of legislation and higher history of law, based on Political Economy, by _H. Dankwardt_: N. Œk. und Jurisprudenz, 3 Hefte, 1857, and my preface to _Dankwardt’s_ Nationalökonomisch-civilistischen Studien, 1862. 136 The intellectual power of a people depends upon the vigorous and harmonious development of all seven spheres of life. _ 137 Montecuccoli_, Besondere und geheime Kriegsnachrichten (Leipzig, 1736). A very similar judgment by Cæsar in _Dio Cass._, XLII, 49. _ 138 Bülan_, Handbuch der Staatswirthschaftslehre, 1835.