Note 965 — Chapter IX · LEUKIPPOS OF MILETOS
Reading edition
This seems to be in the main the view of Dyroff, Demokritstudien (1899), pp. 31 sqq., though I should not say that lightness and weight only arose in connexion with the atoms of the earth (p. 35). If we substitute “world” for “earth,” we shall be nearer the truth.