Is the Buddha nature the exact opposite of René Descartes' view?

French philosopher René Descartes is famous for saying "*Je pense, donc je suis.*" (I think, therefore I am.). Is this in fact the exact opposite of the concept of the Buddha nature, with something like "I am. But unfortunately I can think." being the more appropriate idea? --- Descartes seems to be saying that because he can think he is aware that he exists. My (possibly mistaken) impression of Buddha nature is that everything exists, but thinking about one's own existence can disrupt or interfere with that existence.