The inspiration of genius adds a third ingredient: it is the past and the present and the future (your book) that come together in a sudden flash; thus the entire circle of time is perceived, which is another way of saying that time ceases to exist. It is a combined sensation of having the whole universe entering you and of yourself wholly dissolving in the universe surrounding you. It is the prison wall of the ego suddenly crumbling away with the nonego rushing in from the outside to save the prisoner – who is already dancing in the open.