IT IS A WISE CHILD THAT KNOWS ITS OWN FATHER.
It is a wise child that knows its own father.: translation
It is a wise child that knows its own father.
Prov. You can never have certain proof that a certain man is your father. (Implies that the child in question might be illegitimate.) •
It is a wise child that knows its own father, but Emily is so much like her dad that there's very little uncertainty.