"Elementary may be deep"

― Tosio Kato

“Where there is matter, there is Geometry.”

― Johannes Kepler

"Arithmetic has for its object the properties of number in the abstract. In Algebra, viewed as a science of operations, order is the predominating idea. The business of Geometry is with the evolution of the properties of space, or of bodies viewed as existing in space."

― James J. Sylvester