Thomas Blunderville (sic, Blundeville?), The Art of Logic (1599), quoted in Sister Miriam Joseph, The Trivium 200 (2002). Sister Miriam explains: "The second proposition is true with respect to the time while a man sleeps; he may sin when he is awake." But there seems to be something else going on here; wouldn't he sin not even if he slept badly, so long as he slept.
Whoso drinketh well sleepeth well; whoso sleepeth well sinneth not; whoso sinneth not shall be blessed.Therefore, whoso drinketh well shall be blessed.
Elsewhere I find:
He that eateth well drinketh well,Attributed to one William Lithgow (1582-1645)
he that drinketh well sleepeth well,
he that sleepeth well sinneth not,
he that sinneth not goeth straight through Purgatory to Paradise.