- Author: Ottfried Höffe
- Language: German
- Year: 2005
- Author: Hans Koepf, Günther Binding
- Language: German, English, French, Italian, Spanish
- Year: 2005
- Author: Rudolf Simek
- Language: German
- Year: 2006
- Author: Rudolf Simek
- Language: German
- Year: 1984
- Author: Harry Kühnel
- Language: German
- Year: 1993
- Author: Helmuth von Glasenapp
- Language: German
- Year: 1974
- Author: Helmuth von Glasenapp, Heinz Bechert, Hilko Wiardo Schomerus
- Language: German
- Year: 1961
- Author: Otto Knörrich
- Language: German
- Year: 2005
- Author: Ottfried Höffe
- Language: German
- Year: 2005
- Author: Elisabeth Frenzel
- Language: German
- Year: 1970