This chapter deals with the contribution of Italian scholarship to public international law. Its approach is two-fold. First, adopting an “external” perspective, the contribution of Italian scholars to the highly esteemed series of Hague Courses of the famous eponymous Academy may shed some light on what the Italian conception brought to international legal scholarship but also on how Italian scholars were perceived by their foreign brethren, and in what context they were quoted. Second, selecting a specific issue, the chapter focuses on the influence of Italian legal thinking on the shaping of doctrines of State responsibility. Among all the many areas of international law, this is one where the Italian school is constantly viewed as pioneering (together with the German school). For example, the writings of Anzilotti or Cavaglieri are often quoted as astonishingly modern exposés of that branch of the law, providing thus a test-case to verify the contribution and influence of the Italian doctrine of international law.