FORM · NUMBER · GEOMETRY · ARCHITECTURE · LIGHT · COLOR · MUSIC · POETRYAll such disciplines, theories, and scientific investigations as truly invigorate the eye of the soul, and purify the intellect from blindness introduced by studies of a different kind, so as to enable it to perceive the true principles and causes of the universe, were unfolded by Pythagoras to the Greeks. — Iamblichus, Life of Pythagoras