Often a non-Christian knows something about the earth, the heavens, and the other parts of the world, about the motions and orbits of the stars and even their sizes and distances... and this knowledge he holds with certainty from reason and experience. It is thus offensive and disgraceful for an unbeliever to hear a Christian talk nonsense about such things, claiming that what he is saying is based in Scripture. We should do all that we can to avoid such an embarrassing situation, which people see as ignorance in the Christian and laugh to scorn.
Although among heretics and schismatics there is the same Baptism, nevertheless, the remission of sins is not operative among them because of the very rottenness of discord and wickedness of dissension ... Baptism was in them, but it did not profit them outside the Church ... Outside the Church, Baptism works death because of discord.
Moreover, from the time when He said, 'Except a man be born of water and of the Spirit, he cannot enter into the kingdom of heaven;' and again, 'He that loseth his life for my sake shall find it; ' no one becomes a member of Christ except it be either by baptism in Christ, or death for Christ.
Disturbers are to be rebuked, the low spirited to be encouraged, the infirm to be supported, objectors confuted, the treacherous guarded against, the unskilled taught, the lazy aroused, the contentious restrained, the haughty repressed, the poor relieved, the oppressed liberated, the good approved, the evil borne with, and all are to be loved!
It is not earthly riches which make us or our sons happy; for they must either be lost by us in our lifetime, or be possessed when we are dead, by whom we know not, or perhaps by whom we would not.
What grace is meant to do is to help good people, not to escape their sufferings, but to bear them with a stout heart, with a fortitude that finds its strength in faith.
What is reprehensible is that while leading good lives themselves and abhorring those of wicked men, some, fearing to offend, shut their eyes to evil deeds instead of condemning them and pointing out their malice.
It is salutary for us to learn to hold cheap such things, be they good or evil, as attach indifferently to good men and bad, and to covet those good things which belong only to good men, and flee those evils which belong only to evil men.