A Native American grandmother was talking to her grandson about how she felt.
She said, "I feel as if I have two wolves fighting in my heart. One wolf is vengeful, angry, violent. The other wolf is loving and compassionate."
The grandson asked her "Which wolf will win the fight in your heart?"
The grandmother answered, "The one I feed."
[...quoted in Zencast No. 6 - Mindfulness and Peace by Gil Fronsdal (Source Unknown)]