== Pendidikan ==
Ia lahir di [[Barmen]], [[Wuppertal]] dan anak ketiga dari lima bersaudara. Keluarganya beragama [[Kristen Protestan]].
<!--As a schoolboy Rau was active in the [[Confessing Church]], a circle of the German Protestant Church which actively resisted [[Nazism]].
Rau left school in 1949 and worked as a journalist and publisher, especially with the Protestant Youth Publishing House.-->