From Faith and Action (1938) by Helmut Stellrecht for the Hitler Youth:
Race means to be able to think in a certain way. He who has courage, loyalty and honor, the mark of the German, has the race that should rule in Germany, even if he does not have the physical characteristics of the “Nordic” race. The unity of the noble and a noble body is the goal to which we strive. But we despise those whose noble body carries an ignoble soul.
§ A variety of related European races have merged in Germany. One trunk grew from these roots. Each race gave its best strength. Each contributed to the German soul. We Germans have a fighting spirit, a look to the horizon, the “desire to do a thing forits own sake” of the Nordic race. Another racial soul gave us our cozy old cities and our depth. Yet another racial soul gave us mastery of the magical realm of music. Yet another gave us our ability to organize, and our silent obedience.
§ We can not hold it against anyone if he carries a variety of racial lines, for the German soul does as well, and created out of it the immeasurable riches which it possesses above all other nations. The greatness of our Reich grew out of this soul.
§ But the Nordic race must dominate in Germany and shape the soul of each German. It must win out in the breast of each individual. Today our ideal is not the artist or the citizen, but the hero.
§ Our highest treasure is the soul that we have been given. He who mixes his blood with that of foreign inferior races ruins the blood and soul that have been given to him to pass on in purity to his children. He makes his children impure and miserable, and commits the greatest crime that he as a National Socialist can commit.
§ But he who follows the laws of race fulfills the great commandment that only like should be brought together with like, keeping apart those things like fire and water which do not mix.