optimist

She is not the only optimist in the long line of people working hard in pursuit of an AIDS vaccine.

Well then, it seems Kofi Annan is hopping off the optimist bandwagon.

Pessimist: I thought you said you were an optimist - not a fantasist.

Optimist: But you need to remember why so many people are leaving the labor force.

If a patient be an optimist and persuades himself he is improving, he does improve.

For years he has reproached the optimist with the charge that he lived by dreams rather than realities.

The optimist raises the average of the world by his presence, the pessimist lowers the average.

Ever an optimist, he affirmed that no one would see or hear.

He was an easy, natural conversationalist, the kind of a man who "listens" well—an optimist, a dreamer.