Fragmentum Stoicum, On the Criterion

STOIC FRAGMENT (Phil., Uncertain) is SVF 1.142: Diocles of Magnesia in Diogenes Laertius 7.54. Some of the older Stoics make straight logos the criterion, as Posidonius says in On the Criterion.

Von Arnim, Fragments of the Early Stoics vol. 1 (Leipzig, 1905), p. 142. The work-title here is On the Criterion because that is the Posidonian book Diocles names.

One doxographical sentence on the Stoic criterion, not a philosopher's biography.