sky tree cloud
Down-to-earth persons may be  important  members of society, of course.But they do not let their importance " go to their  heads  .They do not  consider  themselves to be better persons than others of less importance, someone who is filled with his own importance and  pride  , often without cause, is said to have "his nose in the air".There is no way a person with his nose in the  [MASK]  can be down-to-earth.Americans use another expression that means almost the same  with  "down-to-earth".The expression is "both-feet-on-the-ground".Someone with both-feet-on-the-ground is a person  with  .He has what is called "  common  sense".He may have  dreams  , but he does not allow them to  block  his knowledge of what is real.The opposite kind of person is  one  who has his "head-in-the-clouds".A man with his head in the clouds is a dreamer whose mind is not in the  real  world.