person
Sphaerus of Borysthenes
Sphaerus
also: Sphaerus, Sphaeri
A Stoic philosopher of the third century BC, pupil of Zeno of Citium and of Cleanthes, noted for the precision of his definitions. Cicero credits him with the earlier definitions of courage that Chrysippus later restated.
Reading notes
- Tusculan Disputations §4.53 the earlier definitions were those of Sphaerus
Sphaerus, a Stoic pupil of Zeno and Cleanthes, reputed an expert definer. Cicero credits him with the definitions of courage that Chrysippus later restated.