499c

ἔστιν δὲ δή, ὡς ἔοικεν, ὃ νῦν λέγεις, ὅτι ἡδοναί τινές εἰσιν αἱ μὲν ἀγαθαί, αἱ δὲ κακαί
is this esti a copula?
as it seems, what you say is that some pleasures…