That is the way to practise the virtues that have been stated. For instance, when a big wave of anger has come into the mind, how are we to control that? Just by raising an opposing wave. Think of love. Sometimes a mother is very angry with her husband, and while in that state, the baby comes in, and she kisses the baby; the old wave dies out and a new wave arises, love for the child. That suppresses the other one. Love is opposite to anger. Similarly, when the idea of stealing comes, non-stealing should be thought of; when the idea of receiving gifts comes, replace it by a contrary thought.