This poster is a clear example of <em>Persuasion.</em> Persuasion is used precisely to influence the reader, observers or audience. It is widely used in marketing a publicity to convince or “persuade” consumer to buy a specific product, or to see a movie. Since persuasion is also linked with morality and ethics, the poster uses it to persuade the Americans to be faithful to the country.
“<em>someone Talked”</em> and point at an unknown person is using the ethic and moral of the people
A reasonable inference that one can make out of this poem is that you should not be worried about your fate, because at the end people are part of a generation which has its own struggles and at the end, people have to face their own destiny,being courageous, as the previous generations were and have been.
This is the reason why is possible to conclude that the two lines best linked to the theme are:
"Be comforted; the world is very old,
And generations pass, as they have passed"
Is talking would be your answer
Ponyboy doesn't want to lose another friend