马克思发现,实践是人类能动地改造物质世界的对象性活动。在实践中,住客体之间发生着物质和能量的交换。因此我们要注重主客体之间的关系,按照主观目的性和自然界的客观规律性相统一的原则实践,才能实现人与自然的真正和谐。另外还须提高人口的质量,改善人类与自然的关系。 Marx found that practice is the object of sexual activity that human beings can actively transform the material world. In practice, the exchange of matter and energy takes place among the guests. Therefore, we must pay attention to the relationship between the subject and the object, and realize the true harmony between man and nature in accordance with the principle of unification of the subjective goals and the objective laws of nature. In addition, we must improve the quality of the population and improve the relationship between mankind and nature.