Who starts something has to finish it.
More Estonian Proverbs:
It is a sheep who lets himself sheared.Estonian
Who sows what shall reap that.
Estonian
Who is man here will be a man there.
Estonian
Who weds a widow with three children takes four thieves into his house.
Estonian
Who lives together with a pig will end up eating shit.
Estonian
Who falls from height will suffer a hard blow.
Estonian