Ten times must thou reconcile again with thyself; for overcoming is bitterness, and badly sleep the unreconciled.

Ten truths must thou find during the day; otherwise wilt thou seek truth during the night, and thy soul will have been hungry.

Ten times must thou laugh during the day, and be cheerful; otherwise thy stomach, the father of affliction, will disturb thee in the night.

Few people know it, but one must have all the virtues in order to sleep well. Shall I bear false witness? Shall I commit adultery?

Shall I covet my neighbour’s maidservant? All that would ill accord with good sleep.

And even if one have all the virtues, there is still one thing needful: to send the virtues themselves to sleep at the right time.