Both optimists and pessimists contribute to society. The optimist invents the aeroplane, the pessimist the parachute.
I'd rather be an optimist and a fool than a pessimist and right.
A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.
A sane person to an insane society must appear insane.
To educate a person in the mind but not in morals is to educate a menace to society.
To the question whether I am a pessimist or an optimist, I answer that my knowledge is pessimistic, but my willing and hope are optimistic.
There is no sadder sight than a young pessimist, except an old optimist.
The man who is a pessimist before 48 knows too much; if he is an optimist after it he knows too little.
A pessimist is somebody who complains about the noise when opportunity knocks.
It is time for parents to teach young people early on that in diversity there is beauty and there is strength.
My congratulations to you, sir. Your manuscript is both good and original; but the part that is good is not original, and the part that is original is not good.
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