WHILE THINKING ABOUT this little verse, it struck me that it applies to more than just friends and companions. It equally applies to those whom we choose to accompany in other ways, especially the characters in our favorite TV shows, books, films, music, and so forth.
A LONG-STANDING truism, first coined by computer programmers, is "Garbage In, Garbage Out", or GIGO for short. What goes up, must come down, and equally true is that what goes in, must come out. What you watch, listen to, or read about will inevitably influence your heart and soul and mind. So choose wisely those with whom you associate! Both in "real life", and in art.