A sleepy master makes his servant a lout. [ English Proverb, collected by George Herbert ]

The night, proceeding on with silent pace, stood in her noon, and viewed with equal face her sleepy rise and her declining race. [ Dryden ]

Great people and champions are special gifts of God, whom He gives and preserves; they do their work and achieve great actions, not with vain imaginations or cold and sleepy cogitations, but by motion of God. [ Luther ]