"Saint Francis is the outstanding exception to the rule that Catholicism discourages concern for the welfare of nonhuman beings. "If I could only be presented to the emperor," he is reported as saying, "I would pray him, for the love of God, and of me, to issue an edict prohibiting anyone from catching or imprisoning my sisters the larks, and ordering that all who have oxen or asses should at Christmas feed them particularly well." Many legends tell of his compassion, and the story of how he preached to the birds certainly seems to imply that the gap between them and humans was less than other Christians supposed. But a misleading impression of the views of Saint Francis may be gained if one looks only at his attitude to larks and the other animals. It was not only sentient creatures whom Saint Francis addressed as his sisters: the sun, the moon, wind, fire, all were brothers and sisters to him. His contemporaries described him as taking "inward and outward delight in almost every creature, and when he handled or looked at them his spirit seemed to be in heaven rather than on earth." This delight extended to water, rocks, flowers, and trees. This is a description of a person in a state of religious ecstasy, deeply moved by a feeling of oneness with all of nature. People from a variety of religious and mystical traditions appear to have had such experiences, and have expressed similar feelings of universal love. Seeing Francis in this light makes the breadth of his love and compassion more readily comprehensible. It also enables us to see how his love for all creatures could coexist with a theological position that was quite orthodox in its speciesism. Saint Francis affirmed that "every creature proclaims: 'God made me for your sake, O man!'" The sun itself, he thought, shines for man. These beliefs were part of a cosmology that he never questioned; the force of his love for all creation, however, was not to be bound by such considerations. While this kind of ecstatic universal love can be a wonderful source of compassion and goodness, the lack of rational reflection can also do much to counteract its beneficial consequences. If we love rocks, trees, plants, larks, and oxen equally, we may lose sight of the essential differences between them, most importantly, the differences in degree of sentience. We may then think that since we have to eat to survive, and since we cannot eat without killing something we love, it does not matter which we kill. Possibly it was for this reason that Saint Francis's love for birds and oxen appears not to have led him to cease eating them; and when he drew up the rules for the conduct of the friars in the order he founded, he gave no instruction that they were to abstain from meat, except on certain fast days."
January 1, 1970
https://en.wikiquote.org/wiki/Francis_of_Assisi