John Baptist de La Salle
It is impossible for two people to live together without being a source of mutual suffering, and as we cause others to suffer, it is but just that we should bear with their failings also and such a burden is light since Jesus Christ helps us to carry it. Do not therefore be so lacking in sense, so unreasonable and so unchristian as to pretend that you should not have to suffer anything from your Brothers and Sisters. This would be truly asking a most unheard of and extraordinary miracle. Do not expect to see such a thing during the whole of your life.