The central idea of "Hymn to Intellectual Beauty" is that there is a spiritual power that stands apart from both the physical world and the heart of man. This power is unknown to man and invisible, but its shadow visits "this various world with as inconstant wing / As summer winds that creep from flower to flower" and it visits also "with inconstant glance / Each human heart and countenance." When it passes away it leaves "our state, / This dim vast vale of tears, vacant and desolate." Shelley does not profess to know why Intellectual Beauty, which he calls "unknown and awful," is an inconstant visitor, but he is convinced that if it kept "with glorious train firm state" within man's heart, man would be "immortal and omnipotent." But since the Spirit of Beauty visits the world and man's heart with such irregularity, Shelley pleads with his deity rather than praises it. It remains remote and inaccessible. In the concluding stanza Shelley is a suppliant praying that the power of the Spirit of Beauty will continue to supply its calm "to one who worships thee, / And every form containing thee."