 Rosenstock-Huessy studied jurisprudence and received his doctorate (for Herzogsgewalt und Friedensschutz) from the University of Heidelberg at the age of 21, from which time he went on to teach at the university. He was also to receive a second doctorate in 1923 in History from the same university, for his Königshaus und Stämme in Deutschland zwischen 911 und 1250, a book he had published in 1914. His teachers included Rudolf Sohm and Otto Gierke, both key figures in the historical school of law. While he was not a disciple of either, throughout his life he would never cease writing on the growth and decay of socio-political formations and what forced people to hate one form of life and seek to found another.