The soul itself is music, and when it is experiencing the realization of divine truth its tendency is to express itself in poetry. Hafiz therefore expressed his soul in poetry. And what poetry! Poetry full of light and shade, line and color, poetry full of feeling. No poetry in the world can be compared to that of Hafiz in its delicacy. Only the fine soul who has a subtle perception of light and shade expressed in words, can grasp the meaning of the illumination of the soul. Nevertheless the words of Hafiz have won every heart that listens, and even those who do not wholly understand them are won by their rhythm, charm, and beauty of expression.