Rene Descartes, Plagiarist
I’m sure this is old news to philosophers, but I just came across a passage in Augustine strikingly similar to Descartes’ famous “cogito ergo sum”. From The City of God (Book XI, Chapter 26):
For, we are, and we know that we are, and we love to be and to know that we are. And in this trinity of being, knowledge, and love there is not a shadow of illusion to disturb us. For, we do not reach these inner realities with our bodily senses as we do external objects, as, for example, color by seeing, sound by hearing, odor by smelling, flavor by tasting, hard or soft objects by touching. In the case of such sensible things, the best we can do is to form very close and immaterial images which help us to turn them over in our minds, to hold them in our memory, and thus to keep our love for them alive. But, without any illusion of image, fancy, or phantasm, I am certain that I am, that I know that I am, and that I love to be and to know.
In the face of these truths, the quibbles of the skeptics lose their force. If they say; ‘What if you are mistaken?’ — well, if I am mistaken, I am. For if one does not exist, he can by no means be mistaken. Therefore, I am, if I am mistaken. Because, therefore, I am, if I am mistaken, how can I be mistaken that I am, since it is certain that I am, if I am mistaken? And because, if I could be mistaken, I would have to be the one who is mistaken, therefore, I am most certainly not mistaken in knowing that I am. Nor, as a consequence, am I mistaken in knowing that I know. And when I love both to be and to know, then I add to the things I know a third and equally important knowledge, the fact that I love.
Nor am I mistaken that I love, since I am not mistaken concerning the objects of my love. For, even though these objects were false, it would still be true that I loved illusions. For, if this were not true, how could I be reproved and prohibited from loving illusions? But, since these objects are true and certain, who can doubt that, when they are loved, the loving of them is also true and certain? Further, just as there is no one who does not wish to be happy, so there is no one who does not wish to exist. For how can anyone be happy if he does not exist?