世界上任何事物都是变化发展的。在事物的变化发展中,内因与外因同时存在,缺一不可;内因是事物变化发展的根据,外因是事物变化发展的条件,外因通过内因而起作用。外因在事物的变化发展中,不仅是缺一不可、必要的条件,而且有时起着非常重要的作用。同时,我们还要看到,外因对事物 Everything in the world is changing and developing. In the development of things, internal and external factors exist at the same time, and they are indispensable. Internal factors are the basis for the development of things. External factors are the conditions for the development of things. External factors are not only indispensable and necessary conditions in the development of things, but also play a very important role. At the same time, we must also see that external factors are