In the relationship between the theme and the thick material, the specific writing, there will be two different situations. In the first case, the point of view comes from the large amount of material accumulated by the author from objective reality and practice, that is, the point of view comes from the material. After possessing a large amount of materials, the author finds out the objective law through analysis and shaping, and forms the theme of the article. Many scientific papers are written like this. For example, after Einstein experimented and researched on the photoelectric effect, the radiation process and the specific heat of the solid body, he compared the quantum theory with the scientific works such as "The Quantum Theory on Phase Shooting". After completing the extensive collection and study of the capitalist economic phenomena, Marx completed his "Political Theory of Capital". In this state of writing, the author mainly chooses among his 12 materials the most representative of his theme. https://www.aceessays.com/materials-should-be-the-theme-of-unity.html