Most men admire Virtue who follow not her lore. - John Milton

What hath night to do with sleep?

But he, though blind of sight,
Despised, and thought extinguished quite,
With inward eyes illuminated,
His fiery virtue roused
From under ashes into sudden flame,
[...]
So Virtue, given for lost,
Depressed and overthrown, as seemed,
Like that self-begotten bird
In the Arabian woods embost,
That no second knows nor third,
And lay erewhile a holocaust,
From out her ashy womb now teemed,
Revives, reflourishes, then vigorous most
When most unactive deemed;
And, though her body die, her fame survives,
A secular bird, ages of lives.

Gabriel, to thee thy course by lot hath given
Charge and strict watch that to this happy place
No evil thing approach or enter in.