Everyday we are bombarded with various forms of stimuli. We see many people, we hear cars drive by, we feel the cool breeze, etc, but how can we prove that we are really experiencing these stimuli? That is the question that Rene Descartes asked some three hundred fifty years ago, is there any...

Rene' Descartes was a modern European thinker. Throughout his meditations he constantly implies that we are "things that think". Our bodies, these things, are just a jumbled mess of flesh, blood and bone. It is thinking that creates the person. Thinking is what separates humans fr...