Qualitatively different contradictions can only be resolved by qualitatively different methods. For instance, the contradiction between the proletariat and the bourgeoisie is resolved by the method of socialist revolution; the contradiction between the colonies and imperialism is resolved by national[4-443]war; the contradiction between the great masses of the people and the feudal system is resolved by the method of democratic revolution;[4-444]the contradiction between the proletariat[4-445] and the peasantry[4-446] is resolved by the socialization of agriculture; contradiction within the Communist Party, is resolved by the method of ideological struggle;[4-447] the contradiction between society and nature is resolved by the method of developing the productive forces. Processes change, old processes and old contradictions disappear, new processes and new contradictions emerge, and the methods of resolving contradictions differ accordingly. In Russia, there was a fundamental difference between the method used for resolving the contradiction resolved by the February Revolution and the contradiction resolved by the October Revolution.[4-448] It is a principle to use different methods to cope with different contradictions.
In order to reveal the particularity of the contradiction in any process,[4-449]in their totality or interconnections, that is in order to reveal the essence of the process, it is necessary to reveal the particularity of the two aspects of each of the contradictions in that process; otherwise it will be impossible to discover the essence of the process. This requires the utmost attention in the study of problems.[4-450]