Sight 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 LenzWatch out for negative power places on the earth, if you can "see" they are reddish and they twist your feelings. They don't vibrate at a rate conducive to humanity.
Frederick LenzThere's this cave and all humanity is in it and there's this terribly bright light at the other end and everybody's afraid of it.
Frederick LenzThere is a world of deaf, dumb and blind people out there, who are shuffling through their lives, not knowing how wonderful life can be. They have their moments, but they are very unconscious.
Frederick Lenz