The system of virtues ( Tugendsystem ) for knights or rulers.
This is a frequent subject in German philosophy and historical studies, often discussed in the context of: Tugenden [v17] [abgeschlossen]
Historical documents or "books of virtues" ( Der Tugenden Buch ). The system of virtues ( Tugendsystem ) for knights or rulers
If you are looking for a specific document with this label, it may belong to one of these types of projects: Tugenden [v17] [abgeschlossen]