"When the atoms are travelling straight down through empty space by their own weight, at quite indeterminate times and places, they swerve ever so little from their course, just so much that you could call it a change of direction. If it were not for this swerve, everything would fall downwards like non-drops through the abyss of space. No collision would have taken place and no impact of atom on atom would have been created. Thus nature would never have created anything.” (Titus Lucretius Carus, 49 BC. Jason L. Saunders. Greek and Roman Philosophy After Aristotle, 1966.)