Weddings can be seen, but love can't be seen; love letters can be seen, misses can't be seen, flowers can be seen, spring can't be seen; fruits can be seen, nutrition can't be seen; the action of help can be seen, caring can't be seen; blowing wind can be felt, the air is invisible; the diploma is visible, but the level is invisible
Some people have come to the conclusion that the invisible is more valuable than the visible
Roses are beautiful because all words are beautiful.