What does golden years mean as an euphemism?

Why does lewis thomas express concern about what we would say to beings from another planet

Which of the following citations correctly follows mla guidelines? a. tanya somanader. "we are stronger because we aredemocracies': president obama addresses the people ofestonia." the white house blog 3 sept. 2014. print. 4 sept. 2014.b. "we are stronger because we are democracies': presidentobama addresses the people of estonia" by tanya somanader.the white house blog 3 sept. 2014. web. 4 sept. 2014.c. somanader, tanya. "we are stronger because we aredemocracies': president obama addresses the people ofestonia." the white house blog 3 sept. 2014. web. 4 sept. 2014d. somanader, tanya. the white house blog. "we are strongbecause we are democracies: president obama addresses thepeople of estonia." 3 sept. 2014. web. 4 sept. 2014.

How does thoreau defend his approach in the second paragraph of "economy" inwalden? -he uses the word "t" because he feels it sounds more interesting-he does not use first-person point of view because his is a fictional account-he uses first-person point of view to get his readers' attention-he uses the word "t" for the sake of sincerity and honesty.