Hitler made references to an "Aryan Race" founding a superior type of humanity. The purest stock of Aryans according to Nazi ideology was the Nordic people of Germany, England, Denmark, The Netherlands, Sweden and Norway. The Nazis defined Nordics as being identified by tall stature (average 175 cm), long faces, prominent chins, narrow and straight noses with a low bridge, lean builds, doliocephalic skulls, straight light hair, light eyes, and fair skin. The Nazis claimed that Germanic people specifically represented a southern branch of the Aryan-Nordic population. The Nazis did not consider all Germans to be of the Nordic type (which predominated the north), and stated that Germany also had a large "Alpine" population (identified by, among other features, lower stature, stocky builds, flatter noses, and higher incidences of darker hair and eyes). Hitler and Nazi racial theorist Hans F. K. Günther framed this as an issue to be corrected through selective breeding for "Nordic" traits. Hitler Youth propaganda emphasized the "Nordic" nature of Germans, with the text issued to all Hitler Youth members stating: "the principal ingredient of our people is the Nordic race (55%). That is not to say that half our people are pure Nordics. All of the aforementioned races appear in mixtures in all parts of our fatherland. The circumstance, however, that the great part of our people is of Nordic descent justifies us taking a Nordic standpoint when evaluating our character and spirit, bodily structure, and physical beauty.