Under this self-explanation heading which is justified on merely reading the Table of Contents of the Revue internationale since 1919, we give extracts of some articles which have appeared in our publication over half a century. The selection may indeed be arbitrary, but its purpose is merely to show the diversity and importance of the subjects dealt with. Those years have been of capital importance and corresponded to a turning point in history all the more profound as all problems have found themselves raised anew.