This poem is about how people often hide their true emotions and struggles, and how we can never truly know what someone else is going through just by looking at them. It emphasizes the importance of not judging people based on appearances and the need to be kind and understanding to others.
We all struggle and sometimes it's easy to judge other people, but we can't really tell if it's just a façade or their real personality. Like, I'm always "fine" and sometimes I see people who are extremely happy, but then they tell me that they are secretly in a lot pain. You just never know.
RE: No One Really Knows...