2. A child who is herding sheep in the mountains doesn't have to herd sheep, he must herd sheep. This is because of his material conditions.

The main contradiction in modern society is the contradiction between the growing material needs and the backward productive forces.

4. Ma Si Knorr's demand theory tells us that human needs are the needs of physiology, safety, communication, respect and self-realization. The first thing to meet is the physiological needs. China ancient tube also said that "the granary knows etiquette, food and clothing know honor and disgrace", therefore, material conditions are the premise of ideology (that is, spirit), so material is more important than spirit.

We never deny that consciousness can react to matter, and mental state can stimulate people's subjective initiative, thus creating value and changing the world. However, material is always the premise. The spiritual wealth of mankind is obtained on the basis of creating value through labor. In other words, material wealth always precedes spiritual wealth. therefore ...