Quote

I'm not a pessimist at all, but I'm not an optimist, either.

I'm a pessimist because of intelligence, but an optimist because of will.

I'm an optimist about other people. I'm not an optimist about myself.

I don't know that I'd call myself an optimist.

I have friends who are very pessimistic. They say you can't possibly be an optimist nowadays. But I think, taking the longer view, you can still be as optimistic as you want.

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

A pessimist? That's a person who has been intimately acquainted with an optimist.

A pessimist is a person who has had to listen to too many optimists.

I think you have an obligation to be an optimist. Because if you're not, nothing will change.