If this is the best of all possible worlds, what are the others? — Voltaire

After the earthquake, which had destroyed three-fourths of the city of Lisbon, the sages of that country could think of no means more effectual to preserve the kingdom from utter ruin than to entertain the people with an auto-da-fe, it having been decided by the University of Coimbra, that the burning of a few people alive by a slow fire, and with great ceremony, is an infallible preventive of earthquakes... The same day there was another earthquake, which made most dreadful havoc.

I have been a hundred times upon the point of killing myself, but still I was fond of life. This ridiculous weakness is, perhaps, one of the dangerous principles implanted in our nature. For what can be more absurd than to persist in carrying a burden of which we wish to be eased? to detest, and yet to strive to preserve our existence? In a word, to caress the serpent that devours us, and hug him close to our bosoms till he has gnawed into our hearts?

As soon as our two travelers had taken leave of His Excellency, Candide said to Martin, "Well, I hope you will own that this man is the happiest of all mortals, for he is above everything he possesses.""But do not you see," answered Martin, "that he likewise dislikes everything he possesses? It was an observation of Plato, long since, that those are not the best stomachs that reject, without distinction, all sorts of food.""True," said Candide, "but still there must certainly be a pleasure in criticising everything, and in perceiving faults where others think they see beauties.""That is," replied Martin, "there is a pleasure in having no pleasure."