An optimist is a person who sees a green light everywhere, while a pessimist sees only the red stoplight... the truly wise person is colorblind. Albert Schweitzer
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. Robert A. Heinlein
He and Reagan were not at all alike, because Reagan is an optimist and Dick Nixon wasn't. Yet in some ways they were alike. Neither really liked to talk on the telephone, for instance. And, in a lot of respects, both of them were very much loners. Lyn Nofziger
I am an optimist because I want to change things for the better and I know that blood has to be spilled and disharmony and cruelty are necessary to do that. Henry Rollins
I am an optimist, unrepentant and militant. After all, in order not to be a fool an optimist must know how sad a place the world can be. It is only the pessimist who finds this out anew every day. Peter Ustinov