Plotinus’ outline of his method on inquiry on eternity and time in 3.7(45).1.4 includes a reference to ‘concentrated apprehensions of thought’ ([…] ταῖς τῆς ἐννοίας ἀθροωτέραις ἐπιβολαῖς […]). Scholars sometimes argue that Plotinus is here referring to the Epicurean notion of ἀθρόα ἐπιβολή (Epic., Ep. Hdt. 35.9; PHerc. 346, col. 4.24–28). I suggest instead that Gal., mm x.38 Kühn provides the closest parallel to Plotinus’ passage. Further parallels between 3.7 and Galens’ lost On Demonstration suggest that Galen, not Epicurus, is (...) Plotinus’ immediate source. (shrink)