All Truth is God's Truth

A person who is a good and true Christian should realize that truth belongs to his Lord, wherever it is found, gathering and acknowledging it even in pagan literature, but rejecting superstitious vanities and deploring and avoiding those who 'though they knew God did not glorify him as God...'

Saint Augustine, On Christian Teaching II.75

The Fullness of Our Happiness

For the fullness of our happiness, beyond which there is none else, is this: to enjoy God the three in whose image we were made.

St. Augustine, De Trinitate, I.18