A disentangler of true and false in so-called Marxianism is obviously needed, and Senatore Croce is eminently fitted for the work. Much of the difficulty of Marx comes from his relation to Hegel. He was greatly influenced by and yet had reacted from Hegel's philosophy without making clear to others or possibly to himself what his final position in regard to Hegel really was. Senatore Croce is a Hegelian, but a critical one. His chief criticism of Hegel is that his philosophy tends to obscure the individuality and uniqueness of history, and Croce seeks to avoid that obscurity by distinguishing clearly the methods of history, of science and of philosophy. He holds that all science deals with abstractions, with what he has elsewhere called pseudo-concepts. These abstractions have no real existence, and it is fatal to confuse the system of abstraction which science builds up with the concrete living reality. 'All scientific laws are abstract laws,' as he says in one of these essays, (III p. 57), 'and there is no bridge over which to pass from the concrete to the abstract; just because the abstract is not a reality but a form of thought, one of our, so to speak, abbreviated ways of thinking. And although a knowledge of the laws may _light up_ our perception of reality, it cannot become that perception itself.' The application to the doctrine of historic materialism is obvious. It calls attention to one of the factors of the historical process, the economic. This factor it quite rightly treats in abstraction and isolation. A knowledge of the laws of economic forces so obtained may 'light up our perception' of the real historical process, but only darkness and confusion can result from mistaking the abstraction for reality and from the production of those _a priori_ histories of the stages of civilisation or the development of the family which have discredited Marxianism in the eyes of historians. In the first essay and the third part of the third Croce explains this distinction between economic science and history and their proper relation to one another. The second essay reinforces the distinction by criticism of another attempt to construct a science which shall take the place of history. A science in the strict sense history is not and never can be.