The anvil fears no blows.
An arrow shot upright falls on the shooter's head.
A new broomsweeps clean.
A candle lights others and consumes itself.
A creaking cart goes long on the wheels.
The chain is no stronger than its weakest link.
A cracked bell can never sound well.
Only the wearer knows where the shoe pinches
When the sword of rebellion is drawn, the sheath should be thrown away.