The Masters of humanity have prescribed only one remedy to remove this darkness and that is by charity, by the practice of which a person's sympathy is broadened from his own self to the whole world. He then becomes the friend of all. In this way man journeys towards the light, and before his eyes the truth of existence is revealed. Every thing and being in life speaks with him and he knows the language of man, beast and bird and even of all things in the universe. Then he realizes the illusion of his self and of the universe. His enlightened soul wants to be purified from this illusion, therefore a Sufi by practicing wisely abstinence and control with the help of sound, journeys gradually towards the eternal goal.