It is not always advisable to play with children's emotions. Often it might be a pleasure to the guardian to see how the child is affected by a certain thought, by a certain word. But by doing this one weakens that faculty. The best thing is to keep the feeling of the child untouched, in order that this deepest faculty may grow still deeper and stronger, so that when the child comes to the age when its emotion must show itself, it is perfected.