Note 93 — Chapter XXVII · PARMENIDES.
Reading edition
This appears to be an illustration of the doctrine which Lassalle ascribes to Herakleitus; perpetual implication of negativity and positivity — des Nichtseins mit dem Sein: perpetual absorption of each particular into the universal; and perpetual reappearance as an opposite particular. See the two elaborate volumes of Lassalle upon Herakleitus, especially i. p. 358, ii. p. 258. He scarcely however takes notice of the Platonic Parmenides.
Some of the Stoics considered τὸ νῦν as μηδέν — and nothing in time to be real except τὸ παρῳχηκὸς and τὸ μέλλον (Plutarch, De Commun. Notitiis contra Stoicos, p. 1081 D).