Thus the five different aspects of spiritual attainment are all attained by the tuning of the heart. What is this tuning of the heart in reality? When a string of the violin is loose it does not give the sound it is meant to give, and therefore it does not fulfill the purpose for which it was put on the violin. It can only be used for that purpose when one has tuned it to the right pitch. And the same condition is needed with the heart.