The British empiricist ripped this Cartesian "congito" apart. How do you KNOW you are thinking. You can't really KNOW anything.
And the battering ram to that (Kirkegard) is You can't even KNOW that you don't know. So if you can't really know that you dont know then the point is moot. My question would be is there a 'thinker' behind the thought. Or is the 'thinker'/Self an illusion of the brain? Hmmmmm.
"One is punished most for ones virtues" Fredrick Neitzche