flow;[98] even the slaying of a tribesman they often regarded lightly when it had been done openly and bravely. In Greece, in ancient times at least, war was the normal relation between different states, and peace an exception, for which a special treaty was required;[99] while to conquer and enslave barbarians was regarded as a right given to the Greeks by Nature. The whole statecraft of the early Republic of Rome was no doubt based upon similar principles;[100] and in later days, also, the war policy of the Romans was certainly not conducted with that conscientiousness which was insisted upon by some of their writers. [Footnote 90: Bancroft, _Native Races of the Pacific States_, ii. 420. Clavigero, _History of Mexico_, i. 371.] [Footnote 91: Clavigero, _op. cit._ i. 363.] [Footnote 92: Bancroft, _op. cit._ ii. 740, 745.] [Footnote 93: Amélineau, _L'évolution des idées morales dans l'Égypte ancienne_, p. 344.] [Footnote 94: _Cf._ Seldeft, _De Synedriis et Præfecturis Juridicis veterum Ebræorum_, iii. 12, p. 1179 _sqq._; Lament, _Études sur l'histoire de l'humanité_, i. 384 _sq._] [Footnote 95: This was later on admitted by Lane (_Modern Egyptians_, p. 574), who had previously maintained that the duty of waging holy war is strongly urged in the Koran.] [Footnote 96: Pool, _Studies in Mohammedanism_, p. 246.] [Footnote 97: Logan, _The Scottish Gael_, i. 101. de Valroger, _Les Celtes_, p. 186.] [Footnote 98: _Njála_, ch. 40, vol. i. 167. Maurer, _Rekehrung des Norwegischen Stammes_, ii. 172.] [Footnote 99: Schmidt, _Ethik der alten Griechen_, ii. 280. Laurent, _op. cit._ i. 46. Plato, _Leges_, i. 625. Livy, xxxi. 29: "Cum alienigenis, cum barbaris aeternum omnibus Graecis bellum est."] [Footnote 100: _Cf._ Lecky, _History of European Morals_, ii. 257.]