I posted this at Mentat's "I think, therefore I am" thread: As I see it, 'thinking' is how existence is assertained - along with 'sensation-of-awareness'. Thus thinking is the source of knowing that 'existence is'. Therefore, it can definitely be claimed that 'thought' is evidence of existence. Since it is. Therefore, since am-ness equates to existence, we can definitely say that "I think, therefore I am.". Descartes was correct I think, about this. The only talking-point is the meaning of 'I'. "Who exactly am I?", is the only thing left to ponder. My last sentence is the reason for this thread. Can we identify 'I' in relation to its sensations and its ability to think & feel & will? Actually, this is exactly how we define ourselves - relatively to the things which we sense. But if we accept that existence can only be ascertained through ones own self (ones sensations; ones ability to think/reason; and ones emotions), we observe that things are identified within our own sensations - within ourselves. I.e., we see things within 'I'. This is significant. From the whole of I's sensations, the identity of the self is ascertained by regarding some parts of those sensations in relation to others. For example, your sensation of sight, which clearly exists within 'you', tells you that 'you' are separate from all other things within that sensation. But such knowledge is clearly nonsense; for how can 'you' be separate from something-else which resides within your own sensation? Awareness is not separate from itself. It is singular. And any thing which is seen within that awareness is clearly existing as a part of that awareness. Not separate to it. So; if 'I' is to make a true judgement of the self, then it clearly needs to encompass the wholeness of its sensations. The wholeness (fullness; truth; absoluteness; richness; whatever... ) of I resides within the wholeness of its sensations. I contend that if the mind can see a universe within itself, then that mind is the wholeness of that universe. Not a finite part of it. Hence, 'I' is the absoluteness of existence.