One of my favorite English proverd is " People who live in glass houses shouldn't thow stones it's often said when a person is criticize often if you have similae weaknesses yourself it means that you should not their character that you have yourself a similar proverb in thai is look at Because it's an excellent metaphor to someone that is very fragile, they've had there fare share of bad luck before, so they know what it's like to be kicked when your on your very last legs. So they shouldn't throw stones (criticize) someone who's having a rough time, because they know what it feels like, and shouldn't what to do that to anyone else. Well that's the interpretation I get from it anyway.