A new broom sweeps clean, but an old broom knows the corners.
More Irish Proverbs:
Two-thirds of help is to give courage.Irish
The hole is more honorable than the patch.
Irish
A dog with two homes is never any good.
Irish
Don't give cherries to a pig; don't give advice to a fool.
Irish
The steed does not retain its speed forever.
Irish
Listen to the sound of the river and you will get a trout.
Irish