No doubt it is difficult to give a certain rule of reading this language expressed in the face, form or movements, but two things can help one to understand it: keen observation to study human nature, and developed intuition. Then one begins to have a sort of key to this language. But if you ask him, he cannot express it. From different compositions of composers one can imagine their character, their life and state of mind. As in the science of sound there is a tone and an overtone, so in the music of a certain composer there is a sense which stands together with the music. The one who hears the notes only enjoys the music. The one who understands the sense knows the mind of the composer. So the verse is the soul of the poet. The poetry is not only poetry, for it has its music behind. The one who reads the verse only enjoys the poetry. But the one who comprehends the sense in it enjoys the music of this poetry. One who asks a question of himself on hearing a certain word, on seeing a certain movement, on observing a certain expression in a face, must receive an answer from his intuition, telling him the cause of this effect which manifests outwardly. In this way the Sufi makes his way for his journey in the inner world.