Chapter XIII

Close thine eyes, and sleep secure;
Thy soul is safe, thy body sure.
He that guards thee, he that keeps,
Never slumbers, never sleeps.
A quiet conscience in the breast
Has only peace, has only rest.
The wisest and the mirth of kings
Are out of tune unless she sings:
Then close thine eyes in peace and sleep secure,
No sleep so sweet as thine, no rest so sure.

_Charles I, King of England_.