To abstain from sin when one can no longer sin is to be forsaken by sin, not to forsake it.

Fortitude is the disposition of soul which enables us to despise all inconveniences and the loss of things not in our power.

How can the past and future be, when the past no longer is, and the future is not yet? As for the present, if it were always present and never moved on to become the past, it would not be time, but eternity.

The peace of the celestial city is the perfectly ordered and harmonious enjoyment of God, and of one another in God. (City of God, Book 19)

Nothing, therefore, happens unless the Omnipotent wills it to happen. He either permits it to happen, or He brings it about Himself.

Carnal lust rules where there is no love of God.

The mere change of custom, even though it may be of advantage in some respects, unsettles men by reason of the novelty: therefore, if it brings no advantage, it does much harm by unprofitably disturbing the Church.