"What is
God? He is
length,
width,
height and
depth." -
St. Bernard of Clairvaux.
The art of understanding man and the universe through 'Divine Proportion' or measure.
The pyramids of Egypt, cathedrals of Europe, or Mexican Ziggurats all have been studied through the Light of Sacred Geometry as a means to understanding the Mysteries of the Universe and the techniques of the Ancients.
Stonehenge and 'Squaring the Circle' are two famous subjects of the Art.