Finally it should be noted that the picture education, especially the pictorial statistics, are of international importance. Words carry more emotion… - Otto Neurath

Science as a system of statements is always an object of discussion. Statements are to be compared with statements, and not with 'experience', or with 'the world', or with something else. All that meaningless doubling belongs to more or less subtle metaphysics and as such must be rejected. Every new statement is to be confronted with existing ones, already brought to a state of harmony between themselves. A statement will be considered correct if it can be joined to them.

True science consists in systematically examining all possible cases. Exact political economy has not achieved this until now. It does not even encompass all actual cases. This is one of the reason why exact theory finds itself in opposition to the historical school and why it does not have an awful lot to say to those economists who occupy themselves with issues of practical interest, theories of crisis, cartels and trusts.

What we have of systematic and orderly action and speech ... seems to go back to primeval systematic orderliness as found in magic. The scientific tendency to link everything with everything else, to regard nothing as indifferent, clearly already belonged to the age of magic. If we reach the dependence of human fate on empirical describable conditions, we are much closer in our way of thinking to the men of the magical times that we are commonly apt to suspect.