What is the theme in Kant: A Very Short Introduction by Roger Scruton?

The illusions of logic is a theme in this book. Kant's philosophy is in many ways a reaction against the Rationalist philosophical systems of thinkers like Gottfried Leibniz. According to the Rationalism, one can know achieve objective knowledge of the world only through reason. Sensation is flawed and bound to an individual's perspective, but, they argue, one can see the world like God does through the use of pure logic. Kant believed that experience was crucial to any knowledge. He strongly disagreed with the notion that one could ever achieve an entirely perspective-less notion.