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

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

I'm a serious optimist. I come from a country where you have little to be hopeful for, and so you have to always be an optimist.

I'm an optimist in the sense that I believe humans are noble and honorable, and some of them are really smart. I have a very optimistic view of individuals.

You have to be an optimist, right? You have to be critical, then you have to be an optimist. Or else you're really stupid.

I find, when you're an optimist, life has a funny way of looking after you.

I guess I'm a hopeful optimist, because to be a pessimist is to be suicidal.

I'm absolutely an optimist. It's the only way to get through life.

There is only one optimist. He has been here since man has been on this earth, and that is man himself. If we hadn't had such a magnificent optimism to carry us through all these things, we wouldn't be here. We have survived it on our optimism.

An optimist is a fellow who believes what's going to be will be postponed.