This quote means that the purpose of comedy is to point out and highlight people’s mistakes or foolishness in a way that is humorous and entertaining. Comedy can help people to understand the errors of their ways and find a path of self-improvement by providing them with a light-hearted experience. Comedy does not scold or reprimand, but instead makes people laugh, thus allowing them to process the mistakes made or errors in judgement in a more positive way and discover a better alternative.