Gregory the Great

(ubi sup.) For because it was written in the law, Thou shalt love thy neighbour as thyself, he is proved to love his neighbour less than himself, who does not share with him in his distress, those things which are even necessary to himself. Therefore that precept is given of dividing with one’s neighbour the two coats, since if one is divided no one is clothed. But we must remark in this, of how much value are works of mercy, since of the works worthy of repentance these are enjoined before all others.