I spoke with him who had said he now knew that inward thought exists, and that its mental images filled up the simple ideas of others [2892]. When he thought that no ideas more simple than his could exist (for they do not think that more simple ones exist than their finest), then I was inspired to portray to him what his mental images are like that he imagined to be the finest, than which finer ones could not possibly exist: namely, that if he would look at any one of them through a microscope (which pleased him greatly, because he was like that), he would see one larger than the horse that appeared [2895], and after that larger than the whole planet with its forests and scenery, and that his simplest mental image was its crust, containing worms, and snakes, not seen by him. At this he was amazed, and this for the reason that it was being portrayed to him by a spiritual mental image, holding his thought to the objects of the microscope, by means of which things most simple to the sight, the least things that do not appear,