And now you might ask, what do I mean by the tuning of the heart? When a string on the violin is loose, it does not give the sound it is meant to give, and therefore, it does not fulfil the purpose for which it is put on the violin. It can only be used for the purpose for which it was put on the violin once you have tuned it to that pitch where it ought to be. And it is the same condition with the heart.