To fight with one's own shadow.
To know what's what.
To pull the chestnuts out of the fire for somebody.
To teach the dog to bark.
Tomorrow never comes.
Tune in, turn on, drop out.
Wait for the cat to jump.
The darkest hour is just before the dawn.
The exception proves the rule.
The hand that rocks the cradle is the hand that rules the world.
The moon does not heed the barking of dogs.
The proof is in the pudding.
The tailor makes the man.
There are more ways to the wood than one.
There is nothing new under the sun.
There's no point crying over spilt milk.
Think today and speak tomorrow.
To be head over ears in debt.
To come off with a whole skin.
To find a mare's nest.
To lay by for a rainy day.
To pull the devil by the tail.
To tell tales out of school.
Too many chiefs, not enough Indians.