| Abstract | The direct conflict between modern western economics and Marxist political economics lies in the discrepancies of their methodology of subject from the perspective of theory of value, which helps us to understand the difference ways of praxis of methodology. According to the unification between theory and methodology, genetics becomes the right “expression” to determinism, and furthermore, which leads the unification between object of study and method of study. That is to say, there is practical unification between history and value called “HISTORY method”; while there is practical unification between science and value called “MATHEMATICS method”. This is the methodological determinations of theory of value, which is neither subject-transplanting nor anti-subject-transplanting. To sum up, it is praxis rather than philosophy or science itself to be able to solve the puzzles among methodology of political economics. |