People
It is easier for a father to have children than for children to have a real father.
— Pope John XXIII

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Becoming a biological father is easy; being a genuine father to one's children is harder. The speaker separates the act of producing offspring from the sustained work of guidance, presence and care that makes someone truly a parent. Fatherhood, on this view, is earned through conduct, not conferred by birth.
Context reviewed