Throw pearls before swine.
More Traditional Proverbs:
Don't ask for a light load, but rather ask for a strong back.Traditional
It is a long lane that has no turning.
Traditional
Education is learning a lot about how little you know.
Traditional
He who accepts nothing has nothing to return.
Traditional
The cuckoo comes in April, and stays the month of May; sings a song at midsummer, and then goes away.
Traditional
The root of all health is in the brain. The trunk of it is in emotion. The branches and leaves are the body. The flower of health blooms when all parts work together.
Traditional