Sir John W. Salmond, Jurisprudence (1913)
“ And conversely every right must be a right against some person or persons, upon whom, therefore, a correlative duty is imposed. Every right or duty involves a vinculum juris or bond of legal obligation, by which two or more persons are bound together. There can be no duty unless there is some one to whom it is due; there can be no right unless there is some one from whom it is claimed; and there can be no wrong unless there is some one who is wronged, that is to say, whose right has been violated. ”
