"The primitive history of the species is all the more fully retained in its germ-history in proportion as the series of embryonic forms traversed is longer; and it is more accurately retained the less the mode of life of the recent forms differs from that of the earlier, and the less the peculiarities of the several embryonic states must be regarded as transferred from a later to an earlier period of life, or as acquired independently."

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If only one country, for whatever reason, tolerates a Jewish family in it, that family will become the germ center for fresh sedition. If one little Jewish boy survives without any Jewish education, with no synagogue and no Hebrew school, it [Judaism] is in his soul. Even if there had never been a synagogue or a Jewish school or an Old Testament, the Jewish spirit would still exist and exert its influence. It has been there from the beginning and there is no Jew, not a single one, who does not personify it.

— Adolf Hitler