Never kiss an opportunity with a dirty mouth.
More Russian Proverbs:
Eat what is cooked; listen to what is said.Russian
Hang a German, even if he is a good man.
Russian
If you talk to an official you must talk rubles.
Russian
Don't put it in my ear, but in my hand.
Russian
A bachelor is never sent as a go-between.
Russian
You cannot break through a wall with your forehead.
Russian