Here are some famous quotations regarding optimism versus pessimism:

Ah, but a man's reach should exceed his grasp -- or what's a heaven for? -- Robert Browning (1812-1889)

An optimist is a driver who thinks that empty space at the curb won't have a hydrant beside it. -- Changing Times

A pessimist is a man who looks both ways before crossing a one-way street. -- Laurence J. Peter

The basis of optimism is sheer terror. -- Oscar Wilde (1854-1900)

Optimism is a kind of heart stimulant -- the digitalis of failure. -- Elbert Hubbard

Pessimist: One who, when he has the choice of two evils, chooses both. -- Oscar Wilde

Pessimists have already begun to worry about what is going to replace automation. -- Laurence J. Peter

There is no sadder sight than a young pessimist. -- Mark Twain

A pessimist is a man who thinks all women are bad. An optimist is one who hopes they are. -- Chauncey Depew

An optimist is one who believes marriage is a gamble. -- Laurence J. Peter

An optimist may see a light where there is none, but why must a pessimist always run to blow it out? -- Michel de Saint-Pierre

The optimist proclaims that we live in the best of all possible worlds, and the pessimist fears this is true. -- James Branch Cabell

A pessimist is an optimist with experience. -- Dad

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