I began to study again and thus it was that I first came to understand perfectly what was the substance and purpose of the life-work of the Jew, Karl Marx. His CAPITAL became intelligible to me now for the first time. And in the light of it I now exactly understood the fight of the Social-Democrats against national economics, a fight which was to prepare the ground for the hegemony of a real international and stock-exchange capital.

In another direction also this course of lectures had important consequences for me.