τὸ μὴ γὰρ εἶναι κρεῖσσον ἢ τὸ ζῆν κακῶς → for it is better not to exist than to live in misery
1ᵉ pl. de οἶδα, v. *εἴδω.
ἴσμεν: 1 л. pl. praes. к *εἴδω.