Who that truly perceives the harmony of the Intellectual Realm could fail, if he has any bent towards music, to answer to the harmony in sensible sounds? What geometrician or arithmetician could fail to take pleasure in the symmetries, correspondences, and principles of order observed in visible things? Consider, even, the case of pictures: Those seeing by the bodily sense the productions of the art of painting do not see the one thing in the one only way; they are deeply stirred by recognizing in the objects depicted to the eyes the presentation of what lies in the idea, and so are called to recollection of the truth — the very experience out of which Love rises. Now, if the sight of Beauty excellently reproduced upon a face hurries the mind to that other Sphere, surely no one seeing the loveliness lavish in the world of sense — this vast orderliness, the form which the stars even in their remoteness display — no one could be so dull-witted, so immoveable, as not to be carried by all this to recollection, and gripped by reverent awe in the thought of all this, so great, sprung from that greatness. Not to answer them could only be to have neither fathomed the world nor had any vision of that other.
Plotinus, Enneads II, 9, 16