It can rightly be said that the synthesis entitled "The French Spirit" represents the greatest achievement of historian Sándor Eckhardt's work, and is also a representative expression in Hungarian intellectual history. In close relation, the study examines various stages of synthesis creation, emphasizing the different manifestations of the intellect within the context of historiographical trends. Thus, we are analysing the triple ideology within which, according to the author, the French nation progressed from the Song of Roland to the 20th century.