You fast, but Satan does not eat. You labor fervently, but Satan never sleeps. The only dimension with which you can outperform Satan is by acquiring humility, for Satan has no humility. Moses the Black
In every man sleeps a prophet, and when he wakes there is a little more evil in the world. Emil Cioran
A thinking woman sleeps with monsters. Adrienne Rich
And he repents in thorns that sleeps in beds of roses. English Proverb
Don't wake up trouble while it sleeps quietly. Russian Proverb
One sleeps like one makes his bed. Finnish Proverb