Aristotle on Chance in Nature

There are some who make chance responsible for this cosmos and all worlds. For they say that by chance there came about a vortex and a motion of separating out and settling into this arrangement of the whole. And this itself is in fact mightily worth 30 wondering at. For they are saying that animals and plants neither are nor come to be by fortune, but that either nature or Intellect or some other such thing is the cause (for what comes into being from each seed is not whatever falls out, but...