Because children see parents as authority figures and gods, they think that the way you treat them is the way they deserve to be treated: “What you say about me is what I am” is a literal truth to your child. Consequently, when children are treated with respect, they conclude that they deserve respect and hence develop self-respect.
Simone Weil once said, "I would like to achieve the kind of radiance that can bring about nonviolently what other people might have to do violently." And, of course, we see teachers like that. We see parents like that, who have a kind of radiance so that they don't have to raise their voice; they don't have to beat their children. . . . They simply make a different atmosphere.