We both are, and know that we are, and delight in our being, and our knowledge of it. Moreover, in these three things no true-seeming illusion disturbs us; for we do not come into contact with these by some bodily sense, as we perceive the things outside of us of all which sensible objects it is the images resembling them, but not themselves which we perceive in the mind and hold in the memory, and which excite us to desire the objects. But, without any delusive representation of images or phantasms, I am most certain that I am, and that I know and delight in this.For if I am deceived, I am.And, consequently, neither am I deceived in knowing that I know.For neither am I deceived in this, that I love, sinceeven if these were false, it would still be true that I loved false things.Further, as there is no one who does not wish to be happy, so there is no one who does not wishto be. For how can he be happy, if he is nothing?
Augustine of Hippo