When you look out of the window, you think that you see an image with your eyes, as this is the way that you have been taught to think. However, in reality this is not how it works, because you do not see the world with your eyes. You see the image created in your brains. This is not a prediction, nor a philosophical speculation, but the scientific truth.
This concept can be better understood when we realize how the visual system operates. The eye is responsible for transforming light into an electric signal by means of the cells in the retina. This electrical signal reaches the sight center in the brain. The signals create the vision you see when you look out of the window. In other words, the sights you see are created in your brain. You see the image in your brain, not the view outside the window. For example, in the picture shown on the right hand side, the light reaches the eyes of the person from outside. This light passes to the small sight center located at the back of the brain after the cells in the eyes transform it into electrical signals. It is these electrical signals which form the picture in the brain. In reality when we open the brain, we wouldn't be able to see any image. However, some kind of consciousness in the mind receives electrical signals in the form of an image. The brain perceives electrical signals in the form of an image, yet it has no eye, eye cells, or retina. So, to whom does the consciousness in the brain belong?
The same question can be asked about the book you are reading now. The light coming to your eyes is converted into electrical signals and reaches your brain, where the view of the book is created. In other words, the book you are reading right now is not outside you, it is actually inside you, in the sight center in the back of your brain. Since you feel the hardness of the book with your hands, you might think that the book is outside you. However, this feeling of hardness also originates in the brain. The nerves on your fingertips transmit electrical information to the touch center in your brain. And when you touch the book, you feel the hardness and intensity of it, the slipperiness of the pages, the texture of the cover and the sharpness of the edge of the pages, all within your brain.
In reality however, you can never touch the real nature of the book. Even though you think that you're touching the book, it is your brain that perceives the tactile sensations. This book exists as a material thing outside of your brain, but you merely confront the image of the book within your brain. However, you should not be tricked by the fact that a writer wrote this book, the pages were designed by a computer and printed by a publisher.
The things that will be explained in due course will show you that you will never know the originals of the people, computers and the publishers in every stages of the production of this book.
We can therefore conclude that everything we see, touch and hear merely exists in our brains. This is a scientific truth, proven with scientific evidence. The significant point is the answer to the question asked above, which this scientific truth has led us to ask; who is it that has no eye, but watches sights through a window in our brains and enjoys or becomes anxious from these sights? This will be explained in the following pages.