Why does Descartes Take the Substance dualist Position? Cogito, ergo sum( think therefor am,我思 故我在). Here is the unpacked form of the argument 1. cannot be wrong about my own consciousness; 2. the essence of my being is my own consciousness, 3. Therefore, I cannot be wrong about my being, i.e my existence But is this argument question-begging(乞题)?Why does Descartes Take the Substance Dualist Position?  Cogito, ergo sum (I think therefor I am, 我思 故我在). Here is the unpacked form of the argument:  1. I cannot be wrong about my own consciousness;  2. the essence of my being is my own consciousness;  3. Therefore, I cannot be wrong about my being, i.e., my existence.  But is this argument question-begging(乞题)?