With animals invincible affection unites parents with children.  It is the Creator, God Himself, who substitutes the strength of feeling for reason in them.  From whence it comes that a lamb as it bounds from the fold, in the midst of a thousand sheep recognises the colour and the voice of its mother, runs to her, and seeks its own sources of milk.  If its mother’s udders are dry, it is content, and, without stopping, passes by more abundant ones.  And how does the mother recognise it among the many lambs?  All have the same voice, the same colour, the same smell, as far at least as regards our sense of smell.  Yet there is in these animals a more subtle sense than our perception which makes them recognise their own. Fialon quotes Luc. ii. 367–370: “Præterea teneri tremulis cum vocibus hædi Cornigeras norunt matres, agnique petulci Balantum pecudes:  ita, quod natura reposcit, Ad sua quisque fere decurrunt ubera lactis.”  The little dog has as yet no teeth, nevertheless he defends himself with his mouth against any one who teases him.  The calf has as yet no horns, nevertheless he already knows where his weapons will grow. cf. Ovid (Halieut. ad init.): “Accepit mundus legem; dedit arma per omnes, Admonuitque sui.  Vitulus sic namque minatur, Qui nondum gerit in tenera jam cornua fronte.”  Here we have evident proof that the instinct of animals is innate, and that in all beings there is nothing disorderly, nothing unforeseen.  All bear the marks of the wisdom of the Creator, and show that they have come to life with the means of assuring their preservation.