ABSTRACT
The term is of early modern Danish origin, from Old Danish mod seyels. The lexical meaning of modsige (Modsigelse) in Danish is to contradict (contradiction), to object (objection), to protest (protest), also to contradict itself (self-contradiction, Selvmodsigelse). In philosophy, the law or principle of contradiction (Modsigelsens Grundsætning, also Kontradictionsprincippet) states that the same attribute cannot at the same time belong and not belong to the same subject and in the same aspect.1
