The Theory of knowledge
This is a short book of just over 80 pages, but there's plenty packed into that space. The book starts by looking at common forms of argument and their drawbacks. It moves on to the question of Rationalism vs Empiricism, looking at the works of philosophers such as Locke, Hume and Kant. There is a chapter on scepticism, showing that it's more than just a negative attitude. The later chapters look at where our knowledge comes from and the different ways we justify our beliefs. At the end there is an appendix about Cartesian Dualism. I feel that this book is a useful resource and I shall certainly look out for more titles in the Access to Philosophy series.