This article shows how the political, historical, sociological, and economic narrative of Ibn Khaldun influenced the conjunction of elements that were essential to the civilizing language promoted by European and American liberals in the nineteenth and twentieth centuries. The ‘standard of civilization’ has experienced a revival among critical legal scholars. These authors have reconstructed a historical process of ‘rise, fall, and rise’ of the ‘standard of civilization’, identifying its reappearance in an era of globalization and global governance with the current existence of a (neo-)colonial paradigm in international law and a (neo-)liberal global economy. This study is divided into three parts intended to examine in depth the precursory role of this Islamic thinker in the shaping of civilizing language. The first part examines Ibn Khaldun's life as a way of understanding his thinking on civilization. The second part explores the influence of Ibn Khaldun's work on the discourse surrounding the standard of civilization, by reintroducing the interpretation of Rafael Altamira (1866–1951). The third starts with Ibn Khaldun's writings on economic science and Joseph Spengler's (1902–1991) approach to his works. Several Islamic economic institutions and their influence on the state and concept of international society are examined. The revival of Ibn Khaldun's thinking is partly intended to fill an existing gap in the studies of medieval Islamic theorists. By examining his ideas about the socio-political and economic viability of a dynasty (or a civilization or a state), this article attempts to shed light on the intercultural origins of international law.