Ebrahim Soufiani interprets the poem by Rumi in his book The Lost Key, An Exploration into Persian Literature, as meaning that the Peri live in the soul of humanity and are why we have thoughts, illusions, images, and dreams. Illustrations of the Peri almost always include a fountain as representative of the essence of life. Peri are the expression of the gentility, originality, or purity of humanity. They are our spirit.