Some historical background.
Another answer to those who postulate that pan-Europeanism is some sort of recent invention:
This “New Europe” would be a “league of free nations.” Strasser saw this as the culmination of a long held dream among European thinkers.[35] Indeed the concept of “Europe” is a yearning with a long pedigree. In describing the Battle of Poitiers against the Arabs in AD 732 the Chronicle of Isidore of Spain refers to the Christian armies of Charles Martel as the “Europeans.” The empire of Charlemagne (AD 768–814) is named “Europe” by the contemporary chroniclers. In 755 the priest Cathwulf praised Charlemagne as ruling over “the glory of the empire of Europe.”[36] In 799 Angilbert, Charlemagne’s son-in-law and the Court poet, described the Emperor as “the father of Europe” – “Rex, pater Europae.”[37] The “Kingdom of Charles” was called “Europa” in the Annals of Fuld.[38]