Is there a mixture of two meanings here? third criticism: Descartes has put a great deal of effort into demonstrating thought, but he cares too little about the meaning of Being. And that is the point worth discussing. Nascar Car Number 88 Reflection Car Number 3. Descartes is a philosopher with great influence, so to say one of the most influential figures. Even though he was hostile on all sides, he was still a giant face with many new ideas about the body, brain and intellect. But the more he excelled at demonstrating how much Thinking, the more he proved inadequate in his perception of the human body, that is, from a later perspective.