Whenever I go to a certain neighborhood, I always notice one Public School Building with a quote painted onto the side of the building that says: "All Children Smile in the Same Language". For some reason I always thought of it as such a smart quote. I would imagine its used by the public school because they have all different types of children there, from different races and nationalities. So this teaches them to be accepting of each other cause at the end of the day they all have the same feelings and emotions, they laugh and smile the same way.
I think this is a very important lesson to teach children. In could include the different types of personalities children have, the cliques, or the family background the children are brought up in. Even though there are differences among them, they are all children and should treat each other nicely.
This could be taken to every day life as well, not just with children, but all kinds of groups of people. Its something to think about.