Yes, yes he was.
They helped form the roots for the first major philosophies. They explained that everything arises mechanically out of a coalescence of an infinite number of irreducible atoms. Leucippus said,...
They created the original atomic theory. They created the idea that the atom exists and that it is indivisible.
Well dem naggers stole all of da cotten day could find and as you may know of the famous quote from democritus "DEM NAGGERZ STOLE ALL DA COTTEN