A pessimist is someone who has had to listen to too many optimists

A pessimist only sees the dark side of the clouds, and mopes; a philosopher sees both sides and shrugs; an optimist doesn't see the clouds at all--he's walking on them.

A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.

An optimist is a guy that has never had much experience.

Do not expect the world to look bright, if you habitually wear gray-brown glasses.

Don't ever become a pessimist, Ira; a pessimist is correct oftener than an optimist, but an optimist has more fun--and neither can stop the march of events.

Few things in the world are more powerful than a positive push. A smile. A word of optimism and hope. Ayou can do itwhen things are tough.

For myself I am an optimist -- It does not seem to be much use being anthing else.

I don't believe in pessimism. If something doesn't come up the way you want, forge ahead. If you think it's going to rain, it will.

In these times you have to be an optimist to open yours eyes in the morning.

Nothing is built on stone; all is built on sand, but we must build as if the sand were stone.

Optimism: The doctrine that everything is beautiful, including what is ugly, everything good, especially the bad, and everything right that is wrong. ... It is hereditary, but fortunately not contagious.

The habit of looking on the bright side of every event is worth more than a thousand pounds a year.

The optimist proclaims we live in the best of all possible worlds; and the pessimist fears this is true.

The optimist thinks this is the best of all possible worlds. The pessimist fears it is true.

The place where optimism most flourishes is the lunatic asylum.

What passes for optimism is most often the effect of an intellectual error.

You don't always get what you ask for, but you never get what you don't ask for... unless it's contagious!