Which of the following quotes illustrates one of the author’s ideas? “[the boy] thought of all the married shepherds he had known. they had a difficult time convincing their wives that they had to go off into the distant fields. love required them to stay with the people they loved.” “no matter what he does, every person on earth plays a central role in the history of the world. and normally he doesn’t know it.” “i’m only interested in the present. if you can always concentrate on the present, you’ll be a happy man. you’ll see that there is life in the desert, that there are stars in the heavens, and that tribesmen fight because they are part of the human race.” “now, i’m beginning what i could have started ten years ago. but i’m happy at least that i didn’t wait twenty years.”