Think about a friend who promised to do something but didn't. It's like that with this quote – some people keep doing the same bad things but in different ways.
Imagine you have a game and someone keeps cheating, even if they use different tricks each time. This quote means that some people keep being dishonest, even if they do it in new ways.
Just like a kid who keeps making up new excuses for not finishing their homework, some people keep finding new ways to be dishonest instead of changing their behavior. This quote reminds us to be careful around such people.