The first duty towards children is to make them happy. If you have not made them so, you have wronged them. No other good they may get can make up for that.
Bio: Satya Narayan Goenka, commonly known as S.N. Goenka, was a Burmese-Indian teacher of Vipassanā meditation. Born in Burma to a rich Indian family, he moved to India in 1969 and started teaching meditation.