Its daisy the girl he wants to be with again
The second one,
Kennedy specifically addresses groups of nations.
I'd say peacefulness and relaxation. There's no given reason for the trees to be sad or longing, and trees don't obviously exhale or breathe.
"those that are proud due to what they possess should learn from the vanity, vanishing and death of a man whose honour is ill-gotten"
"d. Listen to the guidance of others, but follow your own dream" is the advice that Rudyard Kipling offers readers in “If”, since this is the main theme of the piece.