EN
The author claims that it was Quine's criterion of ontological presuppositons rather than the criterion of ontological commitments commonly associated with his name that essentially shaped contemporary ontology and logic. Undoubtedly both criteria led to a better understanding of the connections between the content of a theory and its existential claims. It seems crucial, however, that Quine emphasized referential status of variables and the role of quantifiers. This aspect of his philosophy inspired interesting discussions and had a strong impct on contemporary logic.