Solipsism then they must be identical, as in indistinguishable from each other and therefore one and the same thing. Dualists then attempt to identify attributes of mind that are lacked by matter (such as privacy or intentionality) or vice versa (such as having a certain temperature or electrical charge). One notable application of the identity of indiscernibles was by René Descartes in his "Meditations on First Philosophy". Descartes concluded that he could not doubt the existence of "himself" (the famous "cogito ergo sum" argument), but that he "could" doubt the (separate) existence of "his" body. From this, he inferred that the
Mr. Cogito book, invites a range of various interpretations, including cultural and historical ones. True to the Cartesian overtones of his name, Mr. Cogito often reflects on life and the world, providing the reader with the thoughtful statements. Coming from an Everyman, they attain a range of universal meanings. The first poem in the collection is entitled "Pan Cogito obserwuje w lustrze swoją twarz" ("Mr Cogito Looks At His Face In A Mirror"). A poem about aging, it poses questions about the limits of individual freedom. The second, "O dwu nogach Pana Cogito" ("On Mr. Cogito's Two Legs") concerns the duality of