(Last 4 parts of The Seven Liberal Arts)
Deals with the abstraction of ‘number’ primarily.
“Mathematics is the alphabet in which god has written the universe.” Galileo Galilei
Pertains to Matter & Quantity- the advanced four.
 MATHEMATICS- number in itself, which is a pure abstraction; that is, outside of space and time.
 GEOMETRY- number in space.
 MUSIC OR HARMONIC THEORY- number in time.
 ASTRONOMY- number in space and time.