Discipline a child, or he will grow up spoiled.

要管教小孩，否则他长大会被宠坏。

youdao

Is it right to discipline a child for bad behaviour?

因小孩行为不好而惩罚他是对的吗？

youdao

A sapling needs pruning, a child discipline.

小树要砍，小孩要管。

《新英汉大辞典》

Ms Mcdonald said before diagnoses her daughter was thought of as a stubborn child who needed discipline.

BBC: Parents raise concern over mutism

If a child grows up with parents who have work, and have some education, and can be role models, and can teach integrity and responsibility, and discipline and delayed gratification -- all those things give a child the kind of foundation that allows them to say, my future, I can make it what I want.

WHITEHOUSE: President Obama Speaks on Building Ladders of Opportunity into the Middle Class | The White House