Now, to enter into details, let us first say that one does not necessarily retain all one has seen. When something is neither interesting nor important, the senses, impressed by the diversity of objects without our voluntary direction of consciousness, are alone affected; the soul does not perceive the impressions because there is no utility in them for her. When the soul is turned towards herself, or towards other objects, and when she applies herself to them entirely, she could not remember these indifferent things, for she does not even perceive them when they are present. Neither is it necessary that the imagination should represent to itself what is accidental; nor, if it does represent them to itself, that it should retain them faithfully. It is easy to be convinced that a sense-impression of this kind is not perceived, on the ground of the following arguments. In the act of walking we divide, or rather traverse the air, without any conscious purpose; consequently we neither notice it, nor think of it, while we press forward. Likewise, if we had not decided to take some particular road, and unless we could fly through the air, we would not think of the region of the earth where we are, nor of the distance we have traveled. This is proved by the fact that when the mind possesses the general knowledge of what occurs, and is sure that the things will occur as planned, a man no longer attends to details. Besides, if a person continues to do the same thing, it would be useless to continue to observe the similar details. Consequently if the stars, while following their courses, carry out their duties without attending to the occurrence of what goes on; and unless their chief duty is to observe occurrences or the occurrence itself; and if their progress is nothing more than accidental, while their attention is held by other and greater objects; and if they regularly continue to pass through the same orbit without considering the calculation of time, even if it had already been divided (under these four conditions); there is no need to suppose that these stars would have a memory of the places they pass by, or of their periods. Their life would be uniform; because they always travel through the same places, so that their movement is, so to speak, more vital than local, because it is produced by a single living being (the universe), which, realizing it within itself, is exteriorly at rest and interiorly in motion by its eternal life. STAR-MOTIONS COMPARED TO A BALLET-CHORUS.