Do not teach a learned person.
More Russian Proverbs:
Even walls may have ears.Russian
If the doctor cures, the sun sees it; if he kills, the earth hides it.
Russian
You cannot hang everything on a single peg.
Russian
A jug that has been mended lasts two hundred years.
Russian
A toad too would like to crack nuts, but he has no teeth.
Russian
Every vegetable has its time.
Russian