He who hunts two hares at once, catches neither.
More Dutch Proverbs:
It needs a cunning hand to shave a fool's head.Dutch
No sheep runs into the mouth of a sleeping wolf.
Dutch
Little things attract light minds.
Dutch
A cock is valiant on his own dunghill.
Dutch
Who chastises his child will be honoured by him, who chastises him not will be shamed.
Dutch
I may go over my reckoning, but not over my time.
Dutch