Proslogium and Monologium/Monologium/Chapter67

Chapter LXVII
The mind itself is the mirror and image of that Being.

Therefore, the mind may most fitly be said to be its own mirror wherein it contemplates, so to speak, the image of what it cannot see face to face. For, if the mind itself alone among all created beings is capable of remembering and conceiving of and loving itself, I do not see why it should be denied that it is the true image of that being which, through its memory and intelligence and love, is united in an ineffable Trinity. Or, at any rate, it proves itself to be the more truly the image of that Being by its power of remembering, conceiving of, and loving, that Being. For, the greater and the more like that Being it is, the more truly it is recognised to be its image.

But, it is utterly inconceivable that any rational creature can have been naturally endowed with any power so excellent and so like the supreme Wisdom as this power of remembering, and conceiving of, and loving, the best and greatest of all beings. Hence, no faculty has been bestowed on any creature that is so truly the image of the Creator.