ABSTRACT
Since the middle of the nineteenth century, Marxian socialism, somewhat modified, has remained the most vital and dominant school of socialist thought despite the many attacks made upon it by friend and foe alike. A number of other schools, however, have played their part in the molding of socialist thought and action. Some of these have aimed to supplement the Marxian school; some have endeavored to revise it; others have sought to carry out to what was felt to be their logical conclusion one or more portions of Marx's teachings.
