ἀειμνήστως
From LSJ
ἡμῶν δ' ὅσα καὶ τὰ σώματ' ἐστὶ τὸν ἀριθμὸν καθ' ἑνός, τοσούτους ἔστι καὶ τρόπους ἰδεῖν → whatever number of persons there are, the same will be found the number of minds and of characters
Spanish
de manera imposible de olvidar, para la eternidad
Russian (Dvoretsky)
ἀειμνήστως: на вечную память, навеки Aeschin.