J. Hirschberger studied at the University of Munich. Disciple of Greyser, Becher and Grabmann, Ph.D. from the same university after having specialized in the Christian philosophy of the Middle Ages. In seminars A. Rehm and E. Schwarz had the opportunity to become familiar with the strict philosophical discipline and develop original research on Greek philosophy. He exercised his teaching of the History of Philosophy Eichstätt first and later the University of Frankfurt.