@Frank Apisa,
Quote:but because I think it appropriate...even obligatory.
How about you?
Appropriate, maybe. Obligatory, naw. Me? I tend to stay away from absolutes. When I say I "know" something, I don't mean that I know it with absolute certainty. If that was required, nobody could really say anything assertive about anything.
Quote:I AM NOT talking about what we (including me) casually refer to as reality...I am talking about the ultimate REALITY of what exists...what IS.
What is? You mean EVERYTHING that is? You mean the one and only "true" thing that guides the universe (like God, or some all-encompassing principle)?
Descartes pretended to start off by doubting everything. As I recall he even doubted the existence of his own body, on principle. He said everything he was seeing could be an illusion, because he could be dreaming, etc.
He wasn't convincing when he claimed to doubt everything. His mere doubting meant he existed, therefore he knew that, with certainty, he said.