Not necessarily. My memory is notoriously unreliable.
But 'to think' is a process. It is not the same as sense you have a mental world, or sense of 'being'.
Descartes uses pretty crude syllogisms in his work, including an infamous circular argument to 'show' that god exists
What you think determines what you are
Overly simplified. The far more important
is much more on point.
May I specify "What you think you are determines what you are"?
I do not understand what this means. I'll grant you that thinking is a process, but so is sensing (seeing, hearing etc.). And I don't see how a sense of being categorically can't be a process.
I know his god proof is absolute bonkers, but it is in no way a fundament for cogitio ergo sum. The fact that one thing he said is untrue, does not mean that another thing he said is untrue as well.
According to cogito ergo sum, rocks don't exist.
I always thought it was a crying shame that there wasn't a philosopher called De'Orss who preceded Descartes, so that if anyone messed up their order in a list, people could could say, "You fool! You put Descartes before De'Orss!"
Spoiler :![]()
It seems to me that what we're discussing is cogito ergo sum is a valid definition of existence while it actually is a demonstration of one's existence? I should read the book again, probably.
As I understood it, the reasoning was that, if the world was an illusion, senses are useless to determine its and our own real existence. Yet if we were to eliminate outside input we would still be thinking and in fact able to reflect that we are thinking. Therefore, thinking proves that he is real.
It's similar to a reductio ad absurdo, unless I'm messing up my concepts. Again, I should reread to refresh.