Certainly it was no design of the atoms to place themselves in a particular order, nor did they decide what motions each should have. But atoms were struck with blows in many ways and carried along by their own weight from infinite times up to the present. They have been accustomed to move and to meet in all manner of ways. For this reason, it came to pass that being spread abroad through a vast time and trying every sort of combination and motion, at length those come together that produce great things, like earth and sea and sky and the generation of living creatures.
Lucretius