Krishna is pictured in Hindu symbology with a crown of peacock's feathers, playing the flute. Krishna is the ideal of Divine Love, the God of Love. And the Divine Love expresses itself by entering into man and filling his whole being. Therefore the flute is the human heart, and a heart which is made hollow will become a flute for the God of Love to play upon. When the heart is not empty -- in other words, when there is no scope in the heart -- there is no place for love.