A amn is foremost in taunting a follower of Democritus 7:
From Wikipedia
http://en.wikipedia.org/wiki/Democritus
Atomists
Unlike Aristotle or Plato, the atomists attempted to explain the world without reasoning to purpose, prime mover, or final cause. For the atomists questions should be answered with a mechanistic explanation ("What earlier circumstances caused this event?"), while their opponents search for explanations which, in addition to the material and mechanistic, also included the formal and teleological ("What purpose did this event serve?").