Research in comparative religion has shown that the oldest, religious documents of ancient India point back to an Ur-Germanic age. - Jakob Wilhelm Hauer

In the two burning centers [Brennpunktsgebieten] of this great expanse, in Indo-Arya and in Germania, we find, even in the religious and spiritual attitudes and formations, an unmistakable kinship, one that extends all the way to their roots.

So much at least is clear, that Indo-Arya remained extensively under the influence of northern blood and stands even today, albeit in pronounced admixture with non-Aryan elements.

Today, it is considered settled that the racial traits of the Indo-Aryans link them historically to that race which has had the definitive influence in the Indo-Germanic world, the northern [race].