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
Stimmführer, princeps (z.B. philosophiae). – auctor (z.B. iuventutis: u. publici consilii [im Reichsrate]).