God gives food to birds, but he doesn't throw food into birds' nests. It means that God gives you something, but you still have to find it by yourself. Here, it means that it is only fair to earn income through labor.
Contemporary college students, who have been spoiled since childhood, have a good trip until they graduate from college, but they are unemployed after graduation, even eating at home. The father's words are ardent hopes for his children, hoping that they can earn their own living and support themselves by relying on their own labor.
Because birds are given food from heaven instead of feeding on nests, it is impossible to get rich by "feeding" from all sides. No matter how rich the funds are, they will be exhausted one day. Only when the "birds" go out for food with hard wings can they have the ability to feed the next generation, which will last forever.
Extended information:
There are other sentences that he agrees with:
"When water is flat, those who are evil take the method, and those who are ugly when looking at the mirror are not angry" means that water is the fairest, and even those who are evil and lawless will take it as the code of conduct; The mirror is the brightest, even ugly people can't complain and get angry in front of it; The reason why water and mirrors can tolerate the world and make people convinced is that they are the most selfless.
the similarity between these two sentences is that they both explain: handle the relationship between efficiency and fairness. Efficiency and fairness are two related and different principles in personal income distribution, namely, efficiency principle and fairness principle.
efficiency refers to the efficiency of resource allocation: the principle of efficiency in distribution means that the social distribution system and policy should aim at promoting the development of productive forces and improving the efficiency of enterprises and the national economy.
the equality of income distribution is the principle of fairness: on the one hand, it refers to the equality of distribution system and policy, specifically, it is necessary to adhere to the distribution system of combining distribution according to work with distribution according to factors, so that the labor input of social members and other various factor inputs can benefit equally.