What does it mean that there is no harm without comparison?

This sentence means that many hurtful things are comparative. For example, you used to live a poor but happy life, but the next-door neighbor has been showing off his wealth in front of you because of his superior life. By contrast, you are too shabby, and their carefree life has brought you deep harm.

In addition, this sentence is also used to laugh at yourself, indicating that you are really pitiful compared with others. For example, a friend throwing dog food in front of you shows how helpless you are as a single dog.

Of course, each of us who lives independently in this world has its own value. We don't have to compare with others, as long as we make our lives full and happy.