I can not recommend enough his collection of essays: Having Thought: Essays in the Metaphysics of Mind
If you are looking for a way to challenge the established understanding of how the mind works there is no better place to start.
-Nikolai
"We know a lot. I know what food penguins eat. I know that phones used to ring, but nowadays squeal, when someone calls up. I know that Essendon won the 1993 Grand Final. I know that here is a hand, and here is another." David Lewis - Elusive Knowledge 1996