This article aims to demonstrate that Rui Barbosa’s role at the Hague Peace Conference of 1907 and his speech at the Buenos Aires Law School, in 1916, are a continuum. On both occasions, he not only defended the same principles, the rule of law over force and the juridical equality of nations, and mainly, fought the same enemy: a doctrine, the ‘Borussian militarist doctrine’. From the standpoint of a contextualist historiography, this text recreates that struggle. This work employs the inductive method of approach as well as primary and secondary bibliographical sources.

中文翻译：

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一个反对战争的人：瑞·巴博萨和反对思想的斗争

本文旨在证明瑞·巴博萨在 1907 年海牙和平会议上的角色和他于 1916 年在布宜诺斯艾利斯法学院的演讲是一个连续体。在这两次事件中，他不仅捍卫相同的原则，即法治胜过武力和国家法律平等，而且主要是与同一个敌人作战：一种学说，即“门兴军国主义学说”。从语境主义史学的角度来看，本文再现了这种斗争。这项工作采用归纳方法以及主要和次要书目来源。