τὸ δ' ἐξαίφνης τὸ ἐν ἀναισθήτῳ χρόνῳ διὰ μικρότητα ἐκστάν → suddenly refers to what has departed from its former condition in a time imperceptible because of its smallness
πάντοις: πᾶσι, Ἐπιγρ. Δελφ. DG 1652, 6 κ. ἀλλ.