The paper considers the significance of work Italian lawyer Santi Romano «Law and Order» (1917–1918) for formation development concept legal pluralism. author’s conclusions related to theory multiple institutions--the rule law in society--are analyzed. reveals thecorrelation S. Romano’s theses with views representatives St. Petersburg school Philosophy (S.I. Gessen, L.I. Petrazhitskiy, P.A. Sor...