The man who is a pessimist before 48 knows too much; if he is an optimist after it, he knows too little.
The optimist thinks this is the best of all possible worlds. The pessimist fears it is true.
The basis of optimism is sheer terror.
An optimist may see a light where there is none, but why must the pessimist always run to blow it out?
The place where optimism most flourishes is the lunatic asylum.
A pessimist is one who makes difficulties of his opportunities and an optimist is one who makes opportunities of his difficulties.
Pessimism leads to weakness. Optimism leads to power.
Pessimism never won any battle.
We are all in the gutter, but some of us are looking at the stars.
There is no sadder sight than a young pessimist.
Optimism doesn't wait on facts. It deals with prospects. Pessimism is a waste of time.
The nice part about being a pessimist is that you are constantly being either proven right or pleasantly surprised.
The optimist sees the rose and not its thorns; the pessimist stares at the thorns, oblivious to the rose.
An optimist will tell you the glass is half-full; the pessimist, half-empty; and the engineer will tell you the glass is twice the size it needs to be.
An optimist stays up until midnight to see the new year in. A pessimist stays up to make sure the old year leaves.
A pessimist is a man who has been compelled to live with an optimist.
I am an optimist. It does not seem too much use being anything else.
Optimism - the doctrine or belief that everything is beautiful, including what is ugly.
I'm a pessimist because of intelligence, but an optimist because of will.
I always like to look on the optimistic side of life, but I am realistic enough to know that life is a complex matter.
Optimism is a kind of heart stimulant - the digitalis of failure.
We live in the best of all possible worlds
A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.
The pessimist complains about the wind; the optimist expects it to change; the realist adjusts the sails.
Pessimist: One who, when he has the choice of two evils, chooses both.
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