ἡγούμενος τῶν ἡδονῶν ἀλλ' οὐκ ἀγόμενος ὑπ' αὐτῶν → of his pleasures he was the master and not their servant
See imprison.
immure in a tomb: V. ἐν τάφῳ κατοικίζειν.