To enjoy good health, to bring true happiness to one's family, to bring peace to all, one must first discipline and control one's own mind. If a man can control his mind he can find the way to Enlightenment, and all wisdom and virtue will naturally come to him.
When infants aren't held, they can become sick, even die. It's universally accepted that children need love, but at what age are people supposed to stop needing it? We never do. We need love in order to live happily, as much as we need oxygen in order to live at all.