Therefore, instead of teaching the lesson of indifference, as many mystics have done, the Sufis have learned the lesson of love, of devotion, of sympathy, and have called it the cultivation of the heart. It is known by the word suluk, which means the loving manner. What we call refined manner is only a manner behind which there is no life. When manner is directed by the heart quality then it becomes living manner, the manner that comes from love, and all such attributes as kindness, gentleness, tolerance, forgiveness, mercy and compassion -they all spring from this loving manner.