MAME: Yes! Life is a banquet, and most poor sons-of-bitches are starving to death! Live!

Jerome Lawrence (1915-2004) American playwright and author [b. Jerome Lawrence Schwartz]
Auntie Mame, Act 2, sc. 6 (1956) [with Robert E. Lee]

Based on the novel Patrick Dennis, Auntie Mame (1955), turned first into this Broadway play by Lawrence and Lee, a 1958 movie, then the musical Mame (1966), followed by a movie of the musical (1974). The line is original with Lawrence and Lee.