People have always wondered at the saints, that they are able to walk around serene, whatever happens. But that is because they can choose where they'll be. They don't have to be angry. You see the difference between having scattered emotions and having a fully vibrating, controlled emotional body. This body is made from energy created from choice, from the effort involved in making choices. But it is necessary to practice; then something is possible.
The carefree hearts of children reflect qualities that are divine by their restless pranks and blissful for their innocence. It is for us to see how far we can make use of this "Divinity" in ourselves, expressed through the child-God.