Because Virgil is not a Christian, he cannot enter Paradise; he has led Dante as far as he can. Furthermore, now that Dante’s own will has been cleansed in Purgatory, his desires are purified, meaning that he doesn’t need Virgil. “[W]hat pleases [him]”—meaning Beatrice, who is symbolic of God’s love—can do that. Dante’s will can now rule and guide itself.