The Mother uses.. ..the Mahakali method, (1) with those in whom there is a great eagerness to progress and a fundamental sincerity somewhere even in the vital, (2) with those whom she meets intimately and who, she knows, will not resent or misunderstand her severity or take it for a withdrawal of kindness or grace but will regard it as a true grace and a help to their sadhana. There are others who cannot bear this method—if it was continued they would run a thousand miles away in misunderstanding, revolt and despair. What the Mother wants is for people to have their full chance for their souls, be the method short and swift or long and tortuous. Each she must treat according to his nature.
– Sri Aurobindo