Stated in incorrigible form, this could be: "That I believe that I exist implies that my belief is true". Harrison argues that a belief being true is really only incidental to the matter, that really what the cogito proves is that belief implies existence.
It can also be stated in an unshakeable manner: "That I hold the conviction that I exist leads to the conclusion that my conviction is valid." Harrison posits that what truly matters is not the veracity of the belief, but rather that believing something implies its own existence.