If they find a Christian mistaken in a field which they themselves know well and hear him maintaining his foolish opinions about our books, how are they going to believe those books in matters concerning the resurrection of the dead, the hope of eternal life, and the kingdom of heaven.

Our Lord reserved to Himself certain things which He would do in due time in a manner outside the course and order of nature, so that they would wonder and be astonished at seeing not great but unusual things, who are unmoved by things daily seen. For the government of the world is a greater miracle than feeding five thousand men from five loaves; yet at the former no one wonders, the latter astonishes all men: not as a greater wonder, but as a rarer.

A Christian man is on his guard with respect to those who philosophize according to the elements of this world, not according to God, by Whom the world itself was made; for he is warned by the precept of the apostle and faithfully hears what has been said, 'Beware that no one deceive you through philosophy and vain deceit, according to the elements of the world'

If you lose your soul, there is a danger of its being destroyed. Therefore, you may not love it, since you do not want it to be destroyed. But in not wanting it to be destroyed, you love it.

Do not say that you have chaste minds if you have unchaste eyes, because an unchaste eye is the messenger of an unchaste heart.

So while he made you without you, he doesn't justify you without you.

The cost of obedience is small compared with the cost of disobedience.