what's the meaning of the last sentence ?
‘After people love one another something very sad is left behind,’
she writes. ‘Life remains always life to live, and so is earthbound.
Perhaps, for that reason, life is all the more beautiful, for it is always
permeated with this sadness. Why do tears run down people’s faces
when they see the most basic, human sights? Because to become
one with the earth is the most frightening reality".