1. The principle of German particularity (Sonderweg): The principle of German particularity holds that Germany has a unique historical and cultural tradition, which is different from other countries. This concept is very influential in the history of Germany, emphasizing the uniqueness of Germany in politics, society and culture, as well as the differences with other countries.

2. Liberalism: Liberalism occupies an important position in German Ideology. Liberalism emphasizes the principles of individual freedom, social progress and democracy, and advocates that the government should protect people's free rights and interests and provide people with equal opportunities.

3. Eugenics: Eugenics is an important part of German ideology, emphasizing the improvement of national purity and social progress through population control and genetic improvement. This concept has been widely spread in some sociological and biological theories in Germany, and has had a far-reaching impact on Nazi Germany's racial policy.

The isomorphism of these two principles constitutes the core of German Ideology. They have had an important influence on German history and culture, and also shaped the development track of German social politics to a certain extent. However, it should be noted that German Ideology is a pluralistic concept, and its principles may be interpreted and emphasized differently in different historical periods and different schools of thought.

Thought of works

German Ideology is not only a magnificent masterpiece that expounds the basic principles of historical materialism, but also a polemical work that criticizes Feuerbach, young hegelians and "real socialists". The book combines positive discussion with theoretical criticism, which runs through the criticism of idealistic historical view in the discussion of historical materialism and plays a positive role in the criticism of negative views.

The influence of later generations

German Ideology is one of the greatest scientific works during the birth of Marxism. It further developed the genius ideas of The Holy Family and The Outline of Feuerbach, systematically expounded the basic principles of historical materialism for the first time, and completed the criticism of young hegelians and Feuerbach's humanism since The Holy Family. At the same time, it also marks that Marx and Engels have completed the liquidation of their previous philosophical beliefs, and Marxist philosophy has matured.