Fasting from words, fasting from a volume of speech, being willing to humbly accept the yoke of silence and quietude deprives the tongue of the mastery of our hearts and minds. The tongue is a very useful tool for the art of love and for the art of prayer, but it is also the means by which we afflict others and even our own selves so often. So it must be called into holy obedience.
Listening to others clearly opens the way to understanding the situation. But listening to others requires quieting some of the voices that already exist within us. When this happens, there is space not only for our own truest voice, what the Quakers call the still small voice within. This voice always tells us the truth. And, as Alice Walker has said,
"...the inner voice can be very scary sometimes. You listen, and then you go 'Do whut?' I don't wanna do that! But you still have to pay attention to it."
We need to take time to quiet down and listen to ourselves with attention -- not only in the midst of action, but when we are alone ... we need to listen fully. It is the basis of all compassionate action.