  We show that a new interpretation of quantum mechanics, in which the notion
of event is defined without reference to measurement or observers, allows to
construct a quantum general ontology based on systems, states and events.
Unlike the Copenhagen interpretation, it does not resort to elements of a
classical ontology. The quantum ontology in turn allows us to recognize that a
typical behavior of quantum systems exhibits strong emergence and ontological
non-reducibility. Such phenomena are not exceptional but natural, and are
rooted in the basic mathematical structure of quantum mechanics.
