Abstract

We explain in brief terms the discovery of the third-person self in computer science. We explain how the incompleteness phenomenon makes consistent, natural, and non trivial the definition of knowledge given by Theaetetus, and we make use of it to define a first-person knower, which, as I have suggested in previous papers is a good candidate for the soul. This invites us to attach canonically a notion of soul to the machine. We justify that the soul of the classical universal machine knows already that she is *not* a machine, and can assess some antic argument in favor of the immortality of the soul. We end by looking if this can be corroborated by a personal experience, and in which sense could a human or a machine experience its immortality, and what could that mean.