Panathinaikos Football Club, known as Panathinaikos, or by its full name, and the name of its parent sports club, Panathinaikos A.O. or PAO, is a Greek professional football club based in the City of Athens. The name "Panathinaikos" was inspired by the ancient work of Isocrates, Panathenaicus, where the orator praises the Athenians for their democratic education and their military superiority, used for the benefit of all Greeks. Today a part of Panathinaikos A.O., they are the oldest active football club in Greece, initially founded only to practice this sport. Created in 1908 as "Podosfairikos Omilos Athinon" by Georgios Kalafatis, they play in the Super League Greece, being one of the most successful clubs in Greek football and one of three clubs which have never been relegated from the top division. Amongst their major titles are 20 Greek Championships, 18 Greek Cups, achieving eight times the Double, and 4 Greek Super Cups. They are also the only club that won a championship undefeated, going without a loss in a top-flight campaign, a feat that no other club in Greece has ever been able to achieve.