The one who is least judgemental, for this he should not become the owner of his children or have any expectation from them.
A father should never exercise the fear of power over his children or be overly strict. Words that touch the heart are inspirational, like motherly love. A certified father is he who can touch his children's hearts with his words.
You have to be a guardian or a trustee for your sons-daughters. The world will always improve with love. There is no other solution for it.
Real love does not increase or decrease.It does not overflow when someone offers praise nor does it turn hostile towards the one who insults.It is this love that sees the world as flawless.