Far graver is it to corrupt the faith that is the life of the soul than to counterfeit the money that sustains temporal life.
Faith is God's work within us.
Faith has to do with things that are not seen and hope with things that are not in hand.
When fear is excessive it can make many a man despair.
Locus ab auctoritate est infirmissimus. [The argument from authority is the weakest.]
Further, nothing, except sin, is contrary to an act of virtue. But war is contrary to peace. Therefore war is always a sin.