“That is the visual: you are inside a house, totally sealed off from natural light, and the house is sitting in the middle of an open field full of brilliant light. But what is your house made of? What are your walls made of? How can they seal off all that light and keep you locked inside? Your house is made of your thoughts and emotions. The walls are made of your psyche. That’s what that house is. It is all your past experiences; all your thoughts and emotions; all the concepts, views, opinions, beliefs, hopes, and dreams that you have collected around yourself. You hold them in place on all sides, including above and below you. You have pulled together in your mind a specific set of thoughts and emotions, and then you have woven them together into a conceptual world in which you live. This mental structure completely blocks you from whatever natural light is on the outside of its walls. You have walls of thoughts thick enough, and closed enough, to where nothing but darkness is inside that structure. You are so entranced into paying attention to your thoughts and emotions that you never go beyond the borders they create.”