Cogito ergo sum - Wikipedia, the free encyclopedia This seems to be an interesting anecdote for some, in this thread I will attempt to argue it is poor logic and ultimately flawed. "I think, therefore I am." Analyzing it in pieces you notice that it presupposes an 'I' in the beginning making the rest of it non-nonsensical, what ever I is, states it exists with the first word. In the other half it jumps to the end, concluding that everything with the capacity to think, exists. The problem with this is you are assuming thoughts come from existent beings, or that thoughts exist at all. Cogito ergo sum - Wikipedia, the free encyclopedia I am a bit faulty right now, so bare with me. I compare thinking to prove existence of your self to be real, to the bible proving the existence of a deity somewhere. What does everyone think?