Let sleeping dogs lie

To avoid restarting a conflict.



The idea that startling a sleeping a dog by waking it might not be the best idea, as it may well bite you, is the origin of this phrase. If something has been “put to bed” then don’t stir things up by waking it.

Ex: A man thinks about calling his ex wife while drunk. His friend advises him: It’s best to let sleeping dogs lie.



Spanish: Al perro que duerme, no lo despiertes



German: Schlafende Hunde soll man nicht wecken