Always borrow money from a pessimist, he doesn't expect to be paid back.
An optimist thinks that this is the best possible world. A pessimist fears that this is true.
Both optimists and pessimists contribute to our society. The optimist invents the airplane and the pessimist the parachute. --Gil Stern
A pessimist is one who makes difficulties of his opportunities, and an optimist is one who makes opportunities of his difficulties. --Harry Truman
No pessimist ever discovered the secrets of the stars, or sailed to an uncharted land, or opened a new heaven to the human spirit. --Helen Keller
The pessimist complains about the wind; the optimist expects it to change; the realist adjusts the sails.
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