 He called all creatures his "brothers" and "sisters", and even preached to the birds and supposedly persuaded a wolf in Gubbio to stop attacking some locals if they agreed to feed the wolf.In his "Canticle of the Creatures" ("Praises of Creatures" or "Canticle of the Sun"), he mentioned the "Brother Sun" and "Sister Moon", the wind and water.His deep sense of brotherhood under God embraced others, and he declared that "he considered himself no friend of Christ if he did not cherish those for whom Christ died".