"Parentage is a very important profession, but no test of fitness for it is ever imposed in the interest of the children."
Parents play an important role in the upbringing of a child. A child arrives in this world like a guest with a mind of a blank state, but has immense capabilities. The parents' feelings are hurt if the child does not fulfil its capabilities. The parents wish that their child should be the best in each field. Having such passion is justified. Parents crave that their child should be a doctor, professor, engineer or a scientist. But this is a wrong thinking. When a child achieves a goal of its own interest, then it can flourish full fledgedly in that field.
At times, parents are not liberal in giving the child what they insist. It is a restriction for a child to play in the rain or go out. Such an important and beautiful moment may not arrive in its life again. Thus, freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
Thus, by following the above things, "The affection you get back from children is sixpence given as change for a sovereign."