Nisi credideritis, non intelligitis.
Unless you believe, you will not understand.

But how is it that they [astrologers] have never been able to explain why, in the life of twins, in their actions, in their experiences, their professions, their accomplishments, their positions—in all the other circumstances of human life, and even in death itself, there is often found such a diversity that in those respects many strangers show more resemblance to them than they show to one another, even though the smallest possible interval separated their births and though they were conceived at the same moment, by a single act of intercourse.

Hence, a devout Christian must avoid astrologers and all impious soothsayers, especially when they tell the truth, for fear of leading his soul into error by consorting with demons and entangling himself with the bonds of such association.

I do not study to understand the transit of the stars. My soul has never sought for responses from ghosts. I detest all sacrilegious rites.

The believer has the whole world of wealth (Prov. 17: 6 LXX) and 'possesses all things as if he had nothing' (2 Cor. 6: 10) by virtue of his attachment to you whom all things serve; yet he may know nothing about the circuits of the Great Bear. It is stupid to doubt that he is better than the person who measures the heaven and counts the stars and weighs the elements, but neglects you who have disposed everything 'by measure and number and weight' (Wisd. 11: 21).

The greatest evil is physical pain.

The truth is rather in what God reveals than in what groping men surmise.

Thus there can be no doubt that the world was not created in time but with time. An event in time happens after one time and before another, after the past and before the future. But at the time of creation there could have been no past, because there was nothing created to provide the change and movement which is the condition of time.

To this I may add another form of temptation, manifold in its dangers ... There exists in the soul ... a cupidity which does not take delight in the carnal pleasure but in perceptions acquired through the flesh. It is a vain inquisitiveness dignified with the title of knowledge and science. As this is rooted in the appetite for knowing, and as among the senses the eyes play a leading role in acquiring knowledge, the divine word calls it 'the lust of the eyes' (I John, 2: 16) ... To satisfy this diseased craving ... people study the operations of nature, which lie beyond our grasp when there is no advantage in knowing and the investigators simply desire knowledge for its own sake. This motive is again at work if, using a perverted science for the same end, people try to achieve things by magical arts.

Wherever it was, I did not come to know it through the bodily senses; the only things we know through the bodily senses are material objects, which we have found are not truly and simply one. Moreover, if we do not perceive one by the bodily sense, then we do not perceive any number by that sense, at least of those numbers that we grasp by understanding.

Yes indeed: the human mind, so blind and languid, shamefully and dishonourably wishes to hide, and yet does not wish anything to be concealed from itself. But it is repaid on the principle that while the human mind lies open to the truth, truth remains hidden from it. Yet even thus, in its miserable condition, it prefers to find joy in true rather than false things. It will be happy if it comes to find joy only in that truth by which all things are true—without any distraction interfering.