That's two things you have concrete faith in that I don't. :P
(,
Mon 24 Mar 2008, 17:52,
archived)
Also you don't have to believe you exist, because the ability to believe validates your own existence.
That's Descartes for you.
(,
Mon 24 Mar 2008, 18:07,
archived)
That's Descartes for you.