"It has been said that there is no fool like an old fool, except a young fool. But the young fool has first to grow up to be an old fool to realize what a damn fool he was when he was a young fool"

This quote by Harold MacMillan suggests that both young and old individuals can be absurd, however in various methods. The expression "no fool like an old fool" indicates that as individuals age, they may make foolish choices or act in foolish methods. Nevertheless, the 2nd part of the quote recommends that youths have the potential to be silly also, however they may not recognize it till they are older and have gained more life experience. The phrase "mature to be an old fool" indicates that it requires time and maturity for someone to recognize their past absurdity. In general, the quote highlights the concept that knowledge and understanding often feature age and experience.