Janusz Korczak said: “Allow children to make mistakes and to joyfully strive for improvement. Children love laughter, running about, and playing tricks. If your own life is like a graveyard to you, leave children free to see it as a pasture. If you witness a child’s happiness in all its intensity, then you cannot fail to notice that the highest level of joy results from having overcome some obstacle – from a goal attained or a mystery solved.”