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

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

“The the question whether I am a pessimist or an optimist, I answer that my knowledge is pessimistic, but my willing and hope are optimistic.”

“Are you an optimist or a pessimist?" "I can't remember. Which?" "Do you know what those words mean?" "Not really." "An optimist is positive and hopeful. A pessimist is negative and cynical." "I'm an optimist." "Well, that's good, because there’s no irrefutable evidence. There’s nothing that could convince someone who doesn’t want to be convinced. But there is an abundance of clues that would give the wanting believer something to hold on to.”

“A pessimist is a man who thinks all women are bad. An optimist is a man who hopes they are.”

“The difference between an optimist and a pessimist? An optimist laughs to forget but a pessimist forgets to laugh.”