Descartes is careful to explain the "Cogito," or "I think, therefore, I am," and exactly what is meant by this claim. He discusses if he can be sure about being awake versus being asleep. Descartes thinks that he can be sure. What do you think?
[Reference your book and make an argument (making an argument is important).]
The book: Descartes, Rene //Discourse On Method and Meditations On First Philosophy//Hackett Publishing 4th Edition, 1999//ISBN 0-87220-420-0