Somewhere there is an essence. It is not a physical somewhere. There is no sense of world, of time and space. That is nirvana.
Frederick LenzI would encourage you to follow the pathway to enlightenment, to learn to meditate, to practice mindfulness, and not to really care what anybody thinks about you, including yourself.
Frederick LenzSight is not absolutely essential in this process, but we use sight because it is the dominant sense. It's easiest to interrupt the flow of thought in sense perception and move the mind beyond sense perception with sight.
Frederick Lenz