The human mind may perceive truth only through thinking, as is clear from Augustine.

To one who has faith, no explanation is necessary. To one without faith, no explanation is possible.

God has no need for our worship. It is we who need to show our gratitude for what we have received.

Evil denotes the lack of good. Not every absence of good is an evil, for absence may be taken either in a purely negative or in aprivative sense. Mere negation does not display the character of evil, otherwise nonexistents would be evil and moreover, a thing would be evil for not possessing the goodness of something else, which would mean that man is bad for not having the strength of a lion or the speed of a wild goat. But what is evil is privation; in this sense blindness means the privation of sight.

Future contingents cannot be certain to us, because we know them as such. They can be certain only to God whose understanding is in eternity above time. Just as a man going along a road does not see those who come after him; but the man who sees the whole road from a height sees all those who are going along the road at the same time.

As mariners are guided into port by the shining of a star, so Christians are guided to heaven by Mary.

He who is drawn to something desirable does not desire to have it as a thought but as a thing.