1. 'NATIONAL' AND 'SOCIAL' ARE TWO IDENTICAL CONCEPTIONS. It was only the Jew who succeeded, through falsifying the social idea and turning it into Marxism,...
http://www.hitler.org/speeches/04-12-22.html

2. And then we said to ourselves: THERE ARE NO SUCH THINGS AS CLASSES: THEY CANNOT BE. Class means caste and caste means race. If there are castes in India, well and good; there it is possible, for there there were formerly Aryans and dark aborigines. So it was in Egypt and in Rome. But with us in Germany where everyone who is a German at all has the same blood, has the same eyes, and speaks the same language, here there can be no class, here there can be only a single people and beyond that nothing else. Certainly we recognize, just as anyone must recognize, that there are different 'occupations' and 'professions' [Stände]-there is the Stand of the watchmakers, the Stand of the common laborers, the Stand of the painters or technicians, the Stand of the engineers, officials, etc. Stände there can be. But in the struggles which these Stände have amongst themselves for the equalization of their economic conditions, the conflict and the division must never be so great as to sunder the ties of race.
http://www.hitler.org/speeches/04-12-22.html