Beware of still water, a still dog, and a still enemy.
More Jewish Proverbs:
Pray that you will never have to bear all that you are able to endure.Jewish
Don't throw a stone into a well from which you have drunk.
Jewish
If we all pulled in one direction, the world would keel over.
Jewish
He who can't endure the bad will not live to see the good.
Jewish
When a miller fights with a chimney sweep, the miller gets black and the chimney sweep gets white.
Jewish
Do not meet troubles half-way.
Jewish