When to soft Sleep we give ourselves away,
And in a dream as in a fairy bark
Drift on and on through the enchanted dark
To purple daybreak–little thought we pay
To that sweet bitter world we know by day. – Thomas Bailey Aldrich

The breeze at dawn has secrets to tell you. Do not go back to sleep. – Rumi

Impossible to spend sleepless nights and accomplish anything: if, in my youth, my parents had not financed my insomnias, I should surely have killed myself. – E. M. Cioran