No economist of any school denies that any wealth can only be created by human labor. Marx believed that material wealth was created by productive labor. His theory of duality of labor points out that concrete labor creates use value and abstract labor creates value. But human labor, even the survival and development of human society, can not be separated from nature. Nature is the mother of wealth, which is completely correct.

The process of human wealth creation is the process of turning natural things into what they need, and the ability to play is productivity. The elements of productivity, in addition to human labor, also include tools-based labor materials and labor objects (collectively referred to as production materials). Marx pointed out long ago that productivity certainly includes science. In modern times, science and technology play an increasingly important role in the productivity system. Therefore, Deng Xiaoping's most famous statement that science and technology are the primary productive forces. Science and technology arm people who are the dynamic factors to create wealth, and constantly improve and improve the performance and quality of the means of production, so the productivity is more and more developed and more wealth is created.

Of course, the whole process of production, exchange, distribution and consumption of social wealth is much more complicated than the above. The process of wealth accumulation is also very important, but it is not enough to just set foot in the socio-economic system and economic operation.

I am not an expert in economics. Please correct me if I am wrong.