I speak of a tragic optimism, that is, an optimism in the face of tragedy and in view of the human potential which at its best always allows for: (1) turning suffering into a human achievement and accomplishment; (2) deriving from guilt the opportunity to change oneself for the better; and (3) deriving from life’s transitoriness an incentive to take responsible action.

Pessimism is not in being tired of evil but in being tired of good. Despair does not lie in being weary of suffering, but in being weary of joy. It is when for some reason or other good things in a society no longer work that the society begins to decline; when its food does not feed, when its cures do not cure, when its blessings refuse to bless.

There is a misconception of tragedy with which I have been struck in review after review, and in many conversations with writers and readers alike. It is the idea that tragedy is of necessity allied to pessimism. Even the dictionary says nothing more about the word than that it means a story with a sad or unhappy ending. This impression is so firmly fixed that I almost hesitate to claim that in truth tragedy implies more optimism in its author than does comedy, and that its final result ought to be the reinforcement of the onlooker's brightest opinions of the human animal.

On the contrary, as Miller also notes, “Tragedy implies more optimism in its author than does comedy, and . . . its final result ought to be the reinforcement of the onlooker’s brightest opinions of the human animal.” For the tragic view indicates that we take seriously man’s freedom and his need to realize himself; it demonstrates our belief in the “indestructible will of man to achieve his humanity.

Pessimism n.
A philosophy forced upon the convictions of the observer by the disheartening prevalence of the optimist with his scarecrow hope and his unsightly smile.

Pessimism is a very easy way out when you’re considering what life really is, because pessimism is a short view of life. If you look at what is happening around us today and what has happened just since you were born, you can’t help but feel that life is a terrible complexity of problems and illnesses of one sort or another. But if you look back a few thousand years, you realize that we have advanced fantastically from the day when the first amoeba crawled out of the slime and made its adventure on land. If you take a long view, I do not see how you can be pessimistic about the future of man or the future of the world.

False optimism sooner or later means disillusionment, anger and hopelessness.

the thing about pessimism is that in most cases it's nothing more than a front behind which a body can hide its most sweetful yet painful hopes. please forgive mine.

Pessimism is not in being tired of evil but in being tired of good. Despair does not lie in being weary of suffering, but in being weary of joy. It is when for some reason or other the good things in a society no longer work that the society
begins to decline; when its food does not feed, when its cures do not cure, when its blessings refuse to bless. We might almost say that in a society without such good things we should hardly have any test by which to register a decline; that is why some of the static commercial oligarchies like Carthage have rather an air in history of standing and staring like mummies, so dried up and swathed and embalmed that no man knows when they are new or old.

optimism is a disease

Optimism is not only a false but also a pernicious doctrine, for it presents life as a desirable state and man's happiness as its aim and object. Starting from this, everyone then believes he has the most legitimate claim to happiness and enjoyment. If, as usually happens, these do not fall to his lot, he believes that he suffers an injustice, in fact that he misses the whole point of his existence.

Life is not a matter for simple optimism — for there is evil; nor for mere pessimism — for there is good. The possibility for good in the face of evil is what gives life tragic meaning.

Pessimism is, in brief, playing the sure game. You cannot lose at it; you may gain. It is the only view of life in which you can never be disappointed. Having reckoned what to do in the worst possible circumstances, when better arise, as they may, life becomes child's play.

People assume it’s a matter of personality, the difference between optimists and pessimists. But I believe it all comes down to an inability to forget. The greater your powers of retention, the slimmer your chances at optimism.