1. A message processing method for execution by a message processor, the method comprising the steps of: providing the message processor a plurality of different interpreters for processing a message received through a network; receiving a message packet containing an ontology specifying information and a content; selecting one or more interpreters of the plurality of different interpreters in conformance to the ontology specifying information contained in the message packet; and interpreting the content contained in the message packet by means of the selected one or more interpreters.