It seems that inferiority feelings are an essential part of human condition. It is a part of human existence that human beings are born helpless, that they need adults to take care of them, to nourish them, to protect them. As they grow up, they start to feel that it is a shame to be a child, to be helpless, to be dependent. They want to grow big, powerful, and they want to dominate their parents. During this process some of their attempts must be prohibited. A rivalry develops. At the same time, children normally have a very strong social feeling. If everything develops normally, this social feeling gets stronger, and a rational argumentation with the growing child is possible. Extreme punishments in education, physical and/or psychological abuse, lack of any logic in the adult behavior, laissez-faire methods, or simply not taking care of the child may inhibit the normal growth of social feeling. In this case, a power-struggle will be the method to dominate the environment, not the attempt to be a useful member of the community. So inferiority is the basic challenge to human growth, and growing social feeling is the right answer. - How about ideas like this one?