ἄριστα
From LSJ
εἰ πάλιν ἔστι γενέσθαι, ὕπνος σ' ἔ̣χει οὐκ ἐπὶ δηρόν, εἰ δ' οὐκ ἔστιν πάλιν ἐλθεῖν, αἰώ̣νιος ὕπνος → if it is possible for you to be born again, you will fall asleep, briefly; if it is not possible to return — it would be eternal sleep
Russian (Dvoretsky)
ἄριστα: I (ᾰρ) adv. наилучшим образом, отлично, превосходно Hom., Her., Plat.
II τά
1) Soph. = ἀριστεῖον 1;
2) средство, лекарство (πρὸς ἀμβλυωπίαν Arst.).