St. Augustine and St. Thomas define mortal sin to be a turning away from God: that is, the turning of one's back upon God, leaving the Creator for the sake of the creature. What punishment would that subject deserve who, while his king was giving him a command, contemptuously turned his back upon him to go and transgress his orders? This is what the sinner does; and this is punished in hell with the pain of loss, that is, the loss of God, a punishment richly deserved by him who in this life turns his back upon his sovereign good.
Alphonsus LiguoriWere you to ask what are the means of overcoming temptations, I would answer: The first means is prayer; the second is prayer; the third is prayer; and you should you ask me a thousand times, I would repeat the same.
Alphonsus LiguoriTrue, He is infinite Majesty, but He is also infinite Goodness and infinite Love. There can be no greater Lord than God; neither can there be a more ardent lover than He.
Alphonsus LiguoriAll would wish to be saved and to enjoy the glory of paradise; but to gain heaven, it is necessary to walk in the straight road that leads to eternal bliss. This road is the observance of the divine commandments. Hence, in his preaching, the Baptist exclaimed: Make straight the way of the Lord.
Alphonsus Liguori