Do not spit into the well you may have to drink of.
More Russian Proverbs:
A spoken word is like a sparrow that once has flown away, cannot be caught again.Russian
Cry not out before you are hurt.
Russian
A hammer breaks glass, but also forms steel. Everything cannot be hung on one nail.
Russian
Messengers should be neither beheaded nor hanged.
Russian
To live is well, but to live well is better
Russian
The past is for God, the future for the Tsars.
Russian