Note 41 — Chapter VIII · THE UNIVERSE.
Reading edition
‘hic noster ignis, quem usus vitae requirit, confector est et consumptor omnium; contra ille corporeus vitalis et salutaris omnia conservat alit auget sustinet sensuque afficit’ ib. ii 15, 41. Cicero is quoting from Cleanthes (fr. 30 P); the teaching of Zeno was the same (fr. 71 B).