All err the more dangerously because each follows a truth. Their mistake lies not in following a falsehood but in not following another truth.

Man is neither angel nor beast.

The Church limits her sacramental services to the faithful. Christ gave Himself upon the cross a ransom for all.

[Unbelievers] think they have made great efforts to get at the truth when they have spent a few hours in reading some book out of Holy Scripture, and have questioned some cleric about the truths of the faith. After that, they boast that they have searched in books and among men in vain.

Piety is different from superstition. To carry piety to the extent of superstition is to destroy it. The heretics reproach us with this superstitious submission. It is doing what they reproach us with.

Few men speak humbly of humility, chastely of chastity, skeptically of skepticism.

Perfect clarity would profit the intellect but damage the will.