To show a child what has once delighted you, to find the child's delight added to your own, so that there is now a double delight seen in the glow of trust and affection, this is happiness.
向孩子展示曾经使你快乐的东西，发现孩子的快乐也加到你自己的快乐中去，因此，现在在信任和爱的光辉中可以看到一种双重的快乐，这就是幸福。