Houston Stewart Chamberlain was a British-German philosopher who wrote works about political philosophy and natural science. His writing promoted German ethnonationalism, antisemitism, scientific racism, and Nordicism; he has been described as a "racialist writer". His best-known book, the two-volume Die Grundlagen des neunzehnten Jahrhunderts, published 1899, became highly influential in the pan-Germanic Völkisch movements of the early 20th century, and later influenced the antisemitism of Nazi racial policy. Indeed, Chamberlain has been referred to as "Hitler's John the Baptist".

The Völkisch movement was a German ethnic nationalist movement active from the late 19th century through the dissolution of the German Reich in 1945, with remnants in the Federal Republic of Germany afterwards. Erected on the idea of "blood and soil", inspired by the one-body-metaphor, and by the idea of naturally grown communities in unity, it was characterized by organicism, racialism, populism, agrarianism, romantic nationalism and – as a consequence of a growing exclusive and ethnic connotation – by antisemitism from the 1900s onward. Völkisch nationalists generally considered the Jews to be an "alien people" who belonged to a different Volk from the Germans.