πάντα κινῆσαι πέτρον
From LSJ
τὸ μὴ γενέσθαι κρεῖσσον ἢ φῦναι βροτοῖς → not existing is better for mortals than being born, not to be born is better than life for mortals
Greek > English (Woodhouse)
leave no stone unturned, move heaven and earth
Russian (Dvoretsky)
привести все камни в движение, т. е. употребить все средства.