“Actually he was a pessimist, and, like all pessimists, a ridiculously unobservant man.”
“A pessimist is a man who thinks all women are bad. An optimist is a man who hopes they are.”
“A pessimist is a man who looks both ways when he crosses the street.”
“The man who is a pessimist before 48 knows too much; if he is an optimist after it he knows too little.”
“The difference between an optimist and a pessimist? An optimist laughs to forget but a pessimist forgets to laugh.”
“Both optimists and pessimists contribute to society. The optimist invents the aeroplane, the pessimist the parachute.”