The well-trained mind

Here are a couple of sayings from the Dhammapada:

Hard it is to train the mind, which goes where it likes and does what it wants. But a trained mind brings health and happiness. The wise can direct their thoughts, subtle and elusive, wherever they choose: a trained mind brings health and happiness.

More than those who hate you, more than all your enemies, an untrained mind does greater harm. More than your mother, more than your father, more than all your family, a well-trained mind does greater good.

I found these on the Blue Mountain Center of Meditation website.