It was Stroński who coined the expression, "Miracle at the Vistula," intended to derogate Piłsudski's 1920 victory over the Soviets. Ironically, the expression quickly lost its intended meaning and was adopted with approval by some patriotically- or piously-minded Poles unaware of Stroński's ironic intent.
His academic interests centered on the medieval Occitan literature, especially about the Troubadours. In this field he is reputed as one of the most important scholars of the 20th century.
^S. Stroński, Le Troubadour Elias de Barjols, Toulouse, Privat, 1906; S. Stroński, Le Troubadour Folquet de Marseille, Cracovie, Académie des Sciences-Éditions du Fonds Osławski 1910; S. Stroński, La Légende amoureuse de Bertran de Born, Paris, Champion, 1914.