Which quotes in "A Clean, Well-Lighted Place" support the theme of generational differences?

Although quite
brief, "A Clean-Well-Lighted Place" is full of interpretative possibility.  One theme
is indeed generational difference--a conflict that was also mirrored in 1920s American and
Western European culture.

This theme is introduced early in the text.  The
young waiter is unable to understand how the old man in the story could be depressed since he
had "plenty of money."  Of course in Hemingway's , a closely examined life reveals a
long list of depressing realities.

The young waiter in the story is more
concerned about his late nights than with the old man's difficult existence.  Unable to think
beyond his immediate needs of money and companionship, the waiter notes that "An old man is
a nasty thing."

The older waiter is more sympathetic to the old man's
plight.  Hemingway describes him as "unhurried" (hurry is generally not positive in
any of Hemingway's fiction as at implies an inability to stop and savor life's brief moments of
beauty and goodness).  The older waiter tells his colleague that he has "youth, confidence,
and a job."  The younger waiter has "everything," but he lacks wisdom. The young
waiter rushes home to his wife; the older waiter recognizes that "there may be someone who
needs the cafe."

The two waiters represent two different approaches to
living.  The younger waiter is rash, egotistic, and naive.  The older waiter, like the old man,
has seen the dark side of life--the death, decay, and loss that is "nada" : "a
nothing that he knew all too well."  The cafe--bright and dignified--could offer a respite
from nada.

It is this awareness of nada that separates the waiters and is
here dramatized as a generational difference.  This awareness of nada is not only a function of
age and wisdom, however, but in this story, the confidence and youth of the younger waiter
insulates him from nada.  It is, however, a false insulation.  In Hemingway, nothingness is
pervasive.