Balm of hurt minds, great Nature's second course,
Chief nourisher in life's feast."
And the principal reason which deters Hamlet from suicide is the fear that even if he does sleep well "after life's fitful fever is over," still, that sleep may be full of troubled dreams.
"To sleep, perchance to dream. Ay, there's the rub;
For in that sleep of death what dreams may come
When we have shuffled off this mortal coil,
Must give us pause."
Richard III. says, when the catalogue of his crimes is full, and when he "sees as in a map the end of all":—
"The sons of Edward sleep in Abraham's bosom,
And Anne, my queen, hath bid the world good night."