
This is actually James Branch Cabell from The Silver Stallion (1926)
Misattributed
Coth, in Book Four : Coth at Porutsa, Ch. XXVI : The Realist in Defeat
Source: The Silver Stallion (1926)
Context: Yet creeds mean very little... The optimist proclaims that we live in the best of all possible worlds; and the pessimist fears this is true. So I elect for neither label.
This is actually James Branch Cabell from The Silver Stallion (1926)
Misattributed
“The Optimist thinks this is the best of all possible worlds, the Pessimist fears it is true.”
This is derived from a statement of James Branch Cabell, in The Silver Stallion (1926) : The optimist proclaims that we live in the best of all possible worlds; and the pessimist fears this is true.
Misattributed
Variant: The optimist thinks this is the best of all possible worlds. The pessimist fears it is true.
As quoted in Serving "60 Years to Life", Newsweek Europe (12 December 2005)
ÉPOCA Interview (in Portuguese) http://revistaepoca.globo.com/Epoca/0,6993,EPT1061569-1666-2,00.html, São Paulo, 2005.
“I'm a pessimist about probabilities, I'm an optimist about possibilities.”
As quoted in "Lewis Mumford Remembers" by Carey Winfrey in The New York Times (6 July 1977)
“To the optimist, pessimists are neurotic; to the pessimist, optimists are deluded.”
Humor in Psychotherapy (2007)
“[…] You see, you are an optimist and live on hope. I am a pessimist and live on experience.”
Page 352-353.
Stepping Westward (1965)
Lerner's summary of his life for "Who's Who in America," quoted in Max Lerner, Writer, 89, Is Dead; Humanist on Political Barricades By Richard Severo, The New York Times, https://www.nytimes.com/1992/06/06/arts/max-lerner-writer-89-is-dead-humanist-on-political-barricades.html (6 June 1992)