LEVEL I in Helier J. Robinson's PERENNIAL PHILOSOPHY SYSTEM.
In the history of ideas, there have been some truths that have been discovered and rediscovered many times over. These truths are collectively known as perennial philosophy, and understanding them begins for each of us with a sincere desire to separate reality from illusion.
This book begins by looking at the nature of belief. It then introduces a major belief shock on the nature of our perception of reality. This is then followed by many aftershocks.
If you are willing to spend the time to understand these belief shocks, you will experience an interesting adventure of discovery. You will learn some of the truths of perennial philosophy, and will take a step or two along the road of separating reality from illusion.