To teach the dog to bark

To make (to turn) the air blue

To know everything is to know nothing

To find a mare's nest

To come out with clean hands

To buy a pig in a poke

To add fuel (oil) to the fire (flames)

There's no use crying over spilt milk

There's no use crying over spilt milk

The work shows the workman

The pot calls the kettle black

The last straw breaks the camel's back

The evils we bring on ourselves are hardest to bear

The darkest hour is that before the dawn

The best fish swim near the bottom.

Take us as you find us

Still waters run deep

Six of one and half a dozen of the other

Self done is soon done

Promise little, but do much