seven o'clock
`` But , your excellency , you will then have slept scarcely two hours , '' said Conrad , sadly . `` My old friend , '' said Hardenberg , `` shall we not have time enough for sleeping in our graves ? Let us be awake here on earth as long as possible . You will awaken me at seven o'clock . And now , come and assist me in retiring . '' Fifteen minutes afterward Hardenberg was in bed . A neat little table , with a night-lamp burning on a golden plate , was standing at his bedside .