Full Idea
The majority say causes are immediate (when they are directly proportional to effects), or associate (making an equal contribution to effects), or cooperant (making a slight contribution).
Gist of Idea
Causes are either equal to the effect, or they link equally with other causes, or they contribute slightly
Source
Sextus Empiricus (Outlines of Pyrrhonism [c.180], III.15)
Book Reference
Sextus Empiricus: 'Outlines of Pyrrhonism', ed/tr. Bury,R.G. [Prometheus 1990], p.191