There are so many things we can see but cannot touch like
text : we can see it but we cannot touch text we have written
message : it's same as text
fire : I don't think any intelligent person will try to touch it
stars : when we were I think everyone wanted to touch it but we couldn't you are smart enough to know why
sun : same as star and fire we don't wanna die
sky : it's also same as star
Moon :
Etc