Introduction to philosophy

Introduction to philosophy  midterm .

Answer one of following question .  2pages

In your opinion, are Descartes and Anselm right to claim that we cannot even deny the existence of God without contradicting ourselves ? show what enables them to made this claim using either philosopher version of the ontological argument

Is it possible in your opinion, to distinguish with certainty between waking experiences and dream experiences ? why ? or why not if you believe that is possible show with certainty that you are not dreaming now.