Full Idea
One must believe that the atoms bring with them none of the qualities of things which appear except shape, weight, and size and the properties which necessarily accompany shape.
Gist of Idea
Atoms only have shape, weight and size, and the properties which accompany shape
Source
Epicurus (Letter to Herodotus [c.293 BCE], 54)
Book Reference
Epicurus: 'The Epicurus Reader', ed/tr. Inwood,B. /Gerson,L. [Hackett 1994], p.10
A Reaction
This appears to be fairly precisely a claim that atoms only have primary qualities, though that terminology only came in in the seventeenth century. I take the view to be more or less correct.
Related Idea
Idea 14035 Atoms just have shape, size and weight; colour results from their arrangement [Epicurus]