<P> Kierkegaard argues that the cogito already presupposes the existence of "I", and therefore concluding with existence is logically trivial . Kierkegaard's argument can be made clearer if one extracts the premise "I think" into two further premises: </P> <Ul> <Li> "x" thinks </Li> <Li> I am that "x" </Li> <Li> Therefore, I think </Li> <Li> Therefore, I am </Li> </Ul> <Li> "x" thinks </Li> <Li> I am that "x" </Li>

Cogito ergo sum or what i know for sure i learned from mathematics summary