Mein Kampf
Obviously, Hitler had very different views from the other leaders, Stalin and Lenin. Especially different were their view on “solutions” to the national problems of their countries. In his work, Mein Kampf he talks a lot about race. “Any crossbreeding between two not completely equal beings will result in a product that is in-between the level of the two parents. This was alright to Hitler but crossbreeding races was taboo.”