Which is the best Definition for Mathematics?

• Mathematics is the body of knowledge centered on such
  concepts as quantity, structure, space, and change, and also the academic discipline that studies them.
• Benjamin Peirce called it "the science that draws necessary conclusions".
• Other practitioners of mathematics maintain that mathematics
  is the science of pattern, and that mathematicians seek out
  patterns whether found in numbers, space, science, computers,
  imaginary abstractions, or elsewhere.
• Mathematicians explore such concepts, aiming to formulate new conjectures and
  establish their truth by rigorous deduction from appropriately chosen axioms and definitions.
• Through the use of abstraction and logical reasoning, mathematics evolved from counting, calculation, measurement and the systematic study of the shapes and motions of
  physical objects. Knowledge and use of basic mathematics have
  always been an inherent and integral part of individual and group life.
• Refinements of the basic ideas are visible in
  mathematical texts originating in the ancient Egyptian,
  Mesopotamian, Indian, Chinese, Greek and Islamic worlds.
  Rigorous arguments first appeared in Greek mathematics, most
  notably in Euclid's Elements.
• The development continued in fitful bursts until the Renaissance period of the 16th
  century, when mathematical innovations interacted with new
  scientific discoveries, leading to an acceleration in
  research.