Only tolerant parents can have tolerant children. Children are born of parents, and the heart of tolerance mainly comes from parents. Children learn how to treat people from their parents at first. Parents are tolerant and generous, do not haggle over every ounce, and get along well with colleagues in the neighborhood. Children will follow suit and learn from their parents to deal with their classmates. ...

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Putting yourself in the child's shoes can effectively resolve contradictions. This is called "psychological transposition". When the two sides have contradictions, they can think from each other's point of view.